Xmomx Set of 9 Sizes Bike Seat Post Adapter Shim Seat Post Adapter Bicycle Seat Tube Conversion Sleeve 272mm to 36mm 40mm to 60mm Aluminum Alloy for Road Mountain Bike MTB

There are 9 sizes for your choice with 27.2mm to 31.8mm / 28.6mm to 31.8mm / 30.9mm to 36mm / 30.9mm to 31.6mm / 30.9mm to 33.9mm / 31.6mm to 33.9mm / 31.8mm to 34.9mm / 31.6mm to 34.9mm / 33.9mm to 34.9mm, They are made in high quality material of Aluminum Alloy to support the high strengh, You can use this product to adjust your bike seatpost to different sizes ones, It's widely used for not only Road bike, but also for Mountain bike MTB / Note: Please be sure that check your bike seatpost before placing order, Package includes: 1 x 27.2mm to 31.8mm Seat Post Adapter + 1 x 28.6mm to 31.8mm Seat Post Adapter + 1 x 30.9mm to 36mm Seat Post Adapter + 1 x 30.9mm to 31.6mm Seat Post Adapter + 1 x 30.9mm to 33.9mm Seat Post Adapter + 1 x 31.6mm to 33.9mm Seat Post Adapter + 1 x 31.8mm to 34.9mm Seat Post Adapter + 1 x 31.6mm to 34.9mm Seat Post Adapter + 1 x 33.9mm to 34.9mm Seat Post Adapter