SPECIAL DESIGNED: For Hismith premium sex machine with KlicLok connector.EXTRA-LARGE SIZE: Compatible with any dildos which suction cup is less than 4.5 inch / 11.4 cm.SELF-LOCKING CONNECTOR: Convenient and swift, easy to assemble and disassemble.MADE OF HIGH QUALITY STAINLESS STEEL: Sturdy and durable, it will never rust.WARM PROMPT: This item do not suit for any 3 XLR prong connector sex machine.This Hismith suction cup adapter is a high quality, affordable tool. It is electro polished for a super smooth surface, you can use it as a mirror. It fits with a self-locking KlicLok connector sex machine, and any size dildo with powerful suction can be perfectly compatible with this adapter, so you are not tied down to one particular size dildo. and you don't need to buy an additional dildo to enjoy the sex machine pleasure. you can take any dildo you have to lock it on your sex machine, then start an unbelievable sex journey. What are you waiting for? Come on, you won't be disappointed.NOTE: This adapter suit for Hismith Premium sex machine or machine with a KlicLok connector only! please do not purchase this item for a cheap 3XLR prong machine. This suction adapter is not including any dildos, the dildos on picture just for reference only, besides, this adapter just fit for those sex machine with quick air connector. The suction cup diameter is 4.5 inch / 11.4 cm, so it does not suit those dildos which suction cup diameter over than 4.5 inch / 11.4 cm, keep that in mind.