KlicLok is HiSmith's own patented eight-sided click mount. It is not a brand and not a company. To choose the right attachment, you only need to answer two questions: does it carry "(KlicLok)" in its product title, and does its size suit your machine's stroke length. Anything without KlicLok in the name needs a HiSmith adapter to connect at all.
The quick version
- KlicLok is HiSmith's proprietary eight-sided connector. It clicks on. It does not twist or screw.
- There are no third-party KlicLok attachments. Non-HiSmith toys connect only through a HiSmith adapter.
- The Suction Cup Adaptor is the part that lets you use suction-cup dildos, and only those with a base of 11.3 cm or under.
- The Spring Attachment does not accept suction cups. HiSmith states it works with toys fitted with a KlicLok connector, and warns against oversized dildos and male masturbation cups.
- Attachment length is not thrust depth. Thrust depth is set by your machine's stroke.
- Plain, unbranded packaging. Same-day dispatch on orders placed before 10am. Free shipping over $99.
Who this guide is for
You own a HiSmith machine, or you are about to, and the accessory list reads like a parts catalogue with no explanation. You want to know which pieces will physically connect, which ones will not, and whether the dildos already in your drawer can be made to work.
What KlicLok actually is
KlicLok is HiSmith's patented quick-release attachment mount, built into HiSmith machines. It is a connector format, not a product line and not a rival brand, and any guide that treats it as one is wrong.
The mechanism matters because of its shape. HiSmith describes it as an eight-square connector engineered for non-spin thrusting: the eight flat faces stop the attachment rotating on the rod under load, which round connectors cannot do. It clicks on and releases without tools. It does not screw on, and there is nothing to tighten or check mid-session.
The consequence for your wallet is blunt. If an attachment is not KlicLok, it will not connect to the drive shaft. There is no third-party KlicLok ecosystem to fall back on. Anything else you want to use has to go through a HiSmith adapter, and there are exactly two worth knowing about.
How to spot a KlicLok attachment
Look for "(KlicLok)" in the product title. HiSmith puts it there consistently, at the end of the name, on every attachment built for the system. Browsing the HiSmith Machines and Accessories collection, anything carrying that label connects straight to the drive shaft.
What does not carry it: adapters that exist to bridge non-HiSmith toys onto the machine, and accessories that clamp elsewhere on the frame rather than to the shaft. When you widen the search to the general sex machine accessories range, searching "KlicLok" is the fastest way to separate what bolts on from what does not.
One caveat on the store side: a handful of HiSmith attachments are listed twice, from different import batches. The 7 inch Veined Slim and the 7.5 inch Slim anal dildos each appear as two listings. They are the same product, not two variants.
The attachment types explained
HiSmith's KlicLok range splits into four groups, and the group you want depends on what you are trying to feel, not on what photographs well.
Standard silicone dildos
These are the default and the sensible first purchase. Body-safe silicone, simple shapes, easy to clean. The HiSmith 6.9 inch Original Silicone Dildo (KlicLok) is the most modest of them and the one that teaches you most about how you actually like the machine to move. The 9 inch Original steps up the length without a dramatic jump in girth.
Realistic and textured
The 10 inch Master Dildo (KlicLok) is the most anatomically realistic option in the lineup. The 8.5 inch Silicone Golden Monster Dildo (KlicLok) goes the other way, with a pronounced textured shape meant to be felt on every stroke rather than admired. The 11 inch Silicone Black Curved Dildo (KlicLok) is the one to consider if you are chasing a G-spot or prostate angle, because a curve that agrees with the machine's line of travel does the work for you. If you want to understand curvature before committing to a fixed one, the G-Spot Toys collection is a cheaper place to learn it.
Fantasy shapes
The 8.59 inch Silicone Tentacle Dildo (KlicLok) is the most distinctive thing in the range, and its spiralling ridges read very differently under machine thrust than a smooth shaft does. The 10 inch Silicone Aqua Awl Dildo (KlicLok) sits between abstract and realistic, tapered so that sensation builds through the stroke rather than arriving all at once.
Anal-specific
HiSmith's dedicated anal attachments are slimmer and more tapered than the standard range. The 7.5 inch Slim Silicone Anal Dildo (KlicLok) and the 7 inch Veined Slim Silicone Anal Dildo (KlicLok) cover the same brief with different surface texture, smooth against veined. Of the two, the 7 inch veined is the lower-commitment starting point. Read the safety section before you use either one on a machine.
Spring Attachment vs Suction Cup Adaptor
These two get confused constantly, including in the previous version of this guide. They do different jobs, and only one of them will let you use the dildos you already own.
If your goal is to use your existing dildo collection, the Suction Cup Adaptor is the part you need, and the Spring Attachment is the wrong purchase. HiSmith's listing for the adaptor is explicit: it accepts any suction-cup dildo with a base diameter of 11.3 cm or under, and anything with a larger base is not suitable. Measure the base before you order. Plenty of dildos in the general Dildos range sit inside that limit, and some do not.
The Spring Attachment is a different tool entirely. HiSmith's own key features say it "works with nearly any size toy fitted with a KlicLok Connector" and that it is compatible with "KlicLok HiSmith Premium Sex Machines and KlicLok Connectors ONLY". What it buys you is mechanical: a tightly wound spring that absorbs impact and lets the attachment flex with the stroke instead of driving through it rigidly. Some people find that considerably more comfortable. It is worth noting that HiSmith's own listing gives two different figures for the extended reach it adds, so treat that particular number with caution until they fix it.
Neither of these is a mount. The Suction Cup Adaptor holds a suction-cup dildo onto the machine's shaft. It does not stick the machine to anything, and it is not a load-bearing anchor.
Matching attachment size to your machine's stroke
Attachment length is not thrust depth. Thrust depth is set by your machine's stroke, and that varies enormously across the HiSmith range. An 11 inch dildo on a machine with a 6 cm stroke does not deliver 11 inches of anything.
Read that table before you buy the biggest thing in the catalogue. A short-stroke machine paired with a long attachment gives you a lot of static presence and very little movement. A long-stroke machine paired with a long attachment gives you exactly what the length implies, which is the point at which size actually becomes a decision rather than a number.
For a first attachment, something in the mid range is far more forgiving than going straight to the 11.8 inch Silicone Dildo (KlicLok). The long ones have their place, but they reward a person who already knows how their machine behaves at depth. If you have not chosen the machine yet, the Sex Machines collection is the place to start, because the stroke figure above will constrain every attachment decision that follows.
Vibrating attachments: worth it or not
HiSmith lists vibrating KlicLok attachments, including the 8 inch Silicone Vibrating Pink and Purple Dildo (KlicLok) and the 6.7 inch Silicone Vibrating Purple Dildo (KlicLok). Here is the honest position: the 8 inch listing carries "Vibrating" in its title, but its description does not document the vibration function at all, and no motor, modes or power source are published. We are not going to invent those figures. Ask us before you order if the specifics matter to you.
On the general question of whether vibration earns its place: if the machine is doing the thrusting and you are already reaching for a separate clitoral vibrator, an integrated vibrating attachment is largely redundant, and you are paying extra for a function you have already covered. If you want everything on one shaft and one less thing to hold, it is a real addition. It is not a better attachment, just a different one.
Safety
Machines do not tire, and they do not notice when something has gone wrong. That is the entire risk profile in one sentence.
- The Suction Cup Adaptor is not load-bearing. It attaches a dildo to the machine's shaft. It is not a mount, it does not anchor the machine to a surface, and nothing should hang or push against it as if it were structural.
- Do not use oversized dildos or male masturbation cups with the Spring Attachment. That is HiSmith's own instruction on the product page, not our editorial caution.
- Keep your face and eyes clear when clicking an attachment on or off. Also HiSmith's instruction. The connector is under spring tension.
- Anal use: start at the shortest stroke your machine offers and stay there until you know how it feels. The Premium machines run 3 to 15 cm and the Servok Premium runs 1.7 to 17 cm, so the low end of the dial is genuinely gentle and the top end is not. Work up slowly, or do not work up at all.
- The rectum does not self-lubricate. Use more lube than you think you need, and top it up. Silicone lube degrades silicone toys, so with these attachments that means water-based.
- No numbing or desensitising products. Pain is the signal that stops you tearing. A machine will keep going after you have lost the ability to notice.
- Stop on sharp pain. Bleeding means stop and seek medical care.
- Never go anal to vaginal without washing the attachment or changing the condom on it.
- Check the connector is seated before you power up. KlicLok clicks. If it has not clicked, it is not on.
- Clean the Spring Attachment with mild or neutral detergent only. HiSmith warns that strong detergents can cause it to rust.
Why buy from Pleasing Strings
We are an Australian store with warehouses in Brisbane and Melbourne. Orders placed before 10am dispatch the same day. Shipping is free over $99, packaging is plain and unbranded, and the billing descriptor is discreet. Products carry a 1-year warranty, which sits on top of your rights under Australian Consumer Law rather than replacing them. If you are not sure an attachment fits your machine, ask us before you buy rather than after.
Frequently Asked Questions
Can I use my existing dildos with a HiSmith machine?
Only through the HiSmith Suction Cup Adaptor (KlicLok), and only if the dildo has a suction-cup base with a diameter of 11.3 cm or under. HiSmith states that any suction cup exceeding that diameter is not suitable for the adaptor. The Spring Attachment does not do this job, despite what a lot of guides claim.
Are there third-party KlicLok attachments?
No. KlicLok is HiSmith's patented connector and there is no third-party KlicLok range. Any non-HiSmith toy has to reach the machine through a HiSmith adapter, which in practice means the Suction Cup Adaptor. Treat any listing claiming to be a KlicLok attachment from another brand with suspicion.
Does a longer attachment mean deeper thrusting?
No. Thrust depth is set by the machine's stroke length, not by the attachment. HiSmith publishes 3 to 15 cm for the Premium machines, 1.7 to 17 cm for the Servok Premium, and up to 6 cm for the Cannon. A long attachment on a short-stroke machine sits deeper at rest but still only travels the machine's stroke.
What does the Spring Attachment actually change?
It puts a coiled spring between the drive shaft and the attachment, so the toy flexes and rebounds with the stroke instead of transmitting it rigidly. HiSmith builds it from alloy spring steel and stainless steel with a QPQ surface treatment. It also adds reach, though HiSmith's listing currently gives two conflicting figures for how much.
Is a vibrating attachment worth the extra spend?
Only if you want the vibration integrated into the thrusting shaft. If you already use a separate vibrator alongside the machine, you are buying a function you have. Note that HiSmith's 8 inch vibrating attachment listing does not document its vibration function, so we cannot tell you its modes or how it is powered.
Which KlicLok attachment should I buy first?
A mid-length standard silicone dildo, such as the 6.9 inch or 9 inch Original. They are simple to clean, forgiving to learn on, and they tell you what you actually want from the machine before you spend on texture, curve or length. Buy the exotic one second.
Related guides
- HiSmith KlicLok Attachments: The Complete Compatibility Guide
- HiSmith Sex Machine Accessories: The Complete Guide to Expanding Your Setup
- How to Maintain Your HiSmith Sex Machine: Complete Cleaning and Care Guide
Last updated: 13 July 2026
