Key features

• •【Size Discription】Different Seat Post Shims for your reference：25.4 to 27.2/27.2 to 28.6/27.2 to 30.4/27.2 to 30.8/27.2 to 31.6/31.8 to 34.9mm seatpost shims.
• •【Compatible With】 Bicycle Seatpost shims compatible well with most bicycles, Suitable for MTB bike, mountain bike, road bike, etc. you can easily adjust the diameter of the bicycle seat post,eliminating the trouble of repurchasing the bike seatpost.Or you can also use this reducer as bike handlebar shim
• •【Superb Material】The bike Seatpost Shim is made of high quality 6061 aluminum alloy, CNC machining CD texture surface ,light weight and portable, anti-rust and durable
• •【Easy to Use】1-Open the clamp. 2-Put the seatpost and Shim adapter in. 3-Adjust the post height. 4-Lock the clamp.Apply this bike post shim, 22.2 ID Kids Bike ,BMX Seat Post can be Switched as 25.4 bike seat post.
• •【Warming Tips】Please check your bike frame seat tube outside diameter. Measure the inside diameter of your old clamp. Or measure the outside diameter of your seat tube (on your bike frame). Then make a right choice.