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;