Length adjustable: This bike kickstand with wrench to loosen the middle of screw, length can be adjustable between 12.2”-14.2”(310-360mm) And 16.5''-20.4''. Fits on oval tube diameter 14-26 mm. Suitable: This bike kickstand fits for 22'' 24'' 26'' 27.5'' 29'' Mountain Bike/Road Bicycle/BMX/MTB/City Commuter Bike/Kids Bike/Sports Bike/700 Road Bike. FORTOP kickstand super easy to install, perfect fit with soft plastic grip pieces to keep from scratching the bike frame Material: Made of strong and durable Aluminum Alloy with non-slip reinforced plastic foot. The clamp that hooks the bike has pieces of rubber inside so that you do not do any damage to any part of your bikes frame. Just make sure that you match the shape of your bike structure. Since it's an oval shape, you need to make sure that you put it around your oval part of the bike structure or else it will turn and won't stand. It's the best thing to protect your bike instead of putting it on the floor when resting. Customer Service: FORTOP bike kickstand, spare wear-resisting rubber mat, stainless steel wrench*2, 100% customer satis faction guarantee, 12-month warranty and 24/7 customer support.