TRIWONDER Bike Seatpost Adapter Shim 25.4mm 27.2mm 28.6mm 30.4mm 30.9mm 31.6mm 33.9mm 34.9mm Aluminum Alloy Bicycle Seat Post Tube Adapter for Mountain Bike, Road Bike (27.2mm to 30.9mm)

TRIWONDER Bike Seatpost Adapter Shim 25.4mm 27.2mm 28.6mm 30.4mm 30.9mm 31.6mm 33.9mm 34.9mm Aluminum Alloy Bicycle Seat Post Tube Adapter for Mountain Bike, Road Bike (27.2mm to 30.9mm)

• ✅ DURABLE & LIGHTWEIGHT - Made of high-quality 6061 aluminum alloy with CNC machining anodizing process surface, which offers high strength and corrosion resistance, ensuring long-lasting use
• ✅ VARIOUS SIZES AVAILABLE - Length: 100mm. Diameter: 25.4mm to 27.2mm/ 28.6mm, 27.2mm to 28.6mm / 30.4mm / 30.9mm / 31.6mm / 33.9mm, 28.6mm to 31.8mm, 31.8mm to 34.9mm
• ✅ EASY TO INSTALL - Just open the seatpost clamp, insert the appropriately sized shim and seatpost, adjust to your desired height, and then lock the seatpost clamp
• ✅ UNIVERSAL FIT - Suitable for most road bike, fixed gear bicycle, mountain bikes, downhill bike, track bike, BMX, DH, etc. Solves the problem of mismatched frame and seatpost sizes
• ✅ ATTENTION - Please measure the correct outside diameter of your seatpost (or check the size marks on the seat post) and your bike frame seat tube inside diameter before buying