The oversized 35 mm clamp diameter provides a new level of strength and weight savings. Forged from 6061-T6 3D aluminium. Laser-etched calibration marks make dialling in the perfect angle simple and repeatable. Compatible with both Knock Block and standard head sets and spacers. The Knock Block system protects the frame from impacts by fork and handlebars by eliminating over-rotation of bars. Available in a wide range of sizes for today's mountain rider. Safe for carbon bars.