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

Bicycle Quick Release seatclamp is a durable and lightweight alternative to add some beautiful color to your ride, and makes adjusting seatpost height a breeze. Hollow design, lightweight, Only about 39g (34.9 Clamp) Comes anodized in Black, Blue, Gold,Red and Silver,colorfast surface,great anti-corrosion 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.