Description Lightweight seat clamp made of CNC machined aluminium. Bolt with 4mm Allen key socket. Specification Diameter: 31.8mm, 34.9mmWeight: 18g (31.8mm), 20g (34.9mm)QR Seat Clamp - Available in 31.8mm and 34.9mm sizes$19.00PriceColourSizeSelectQuantityAdd to CartBuy Now