PLATT Bike Seat Post Clamp Aluminium Alloy Bicycle Seatpost Collar 28.6mm / 31.8mm /34.9mm

Aluminum alloy bicycle Seat post clamp，Weight: 23g (34.9 Clamp) Comes anoDized in Black, Blue, Gold,Red and Silver,colorfast surface,great anti-corrosion. Beatiful Color,Stand out from the crowd. Easy to install: Simply secure with a 4mm Allen (hex) head key 💡 28.6 clamp suits for Frame Seat tube 27.8mm-28.8mm , 💡 31.8mm clamp suits for Frame Seat Tube 30.2mm-32.1mm . 💡34.9mm clamp suits for Frame Seat Tube 33.5mm-35.2mm. NOTE: TYPICALLY USED WITH 25.4/27.2/31.8 SEAT POST. HOWEVER, SEAT TUBE WALL THICKNESS VARIES. BE SURE TO MEASURE THE ACTUAL SEAT TUBE O.D. OF YOUR FRAME.