Promax QR-1 Seatpost Clamp - 31.8mm QR Silver MFPN=TB00327800 5 Material Steel Spring Weight

5 Material Steel Spring Weight 400

ISO Diameter 584 / 650b / 27

} Integrated Hall Lock lever stabilizes derailleur and eases wheel removal

An evolution of our original bushing toolset which required the use of a hammer to pound out shock bushings

5 Brake Type Disc Wheel Diameter 27

Promax QR-1 Seatpost Clamp - 31.8mm QR Silver MFPN=TB00327800 5 Material Steel Spring WeightPromax QR 1 Quick Release Seatpost Clamp 31. 8mm Silver. QR 1 seatpost clamps are cold forged and CNC machined from 6061 T6 aluminum alloy. The QR 1 as the name implies has a quick release lever making seat height adjustments a snap. Weighing just 30 grams 1. 1 ounces in the 31. 8 size its as lightweight as it is tough. The head of the lever and the face of the clamp are given a proprietary low friction surface treatment that ensures smooth lever