Box One Quick Release Seatpost Clamp (Black) (31.8mm) - BX-SC130Q318-BK
Box One Quick Release Seatpost Clamp (Black) (31.8mm) - BX-SC130Q318-BK, BOX Helix QR Seat Clamp. Features: CNC machined 6061-T6 aluminum with titanium hardware Zero-Friction cam surface treatment ensures smooth lever action. 27g Specs: Diameter:31.8mm Color:black