7/8" (22 mm) external diameter to fit most standard-sized clamps and controls. 7010 T6 aluminum - which Renthal has exclusive rights to - is a specially developed alloy for the manufacture of handlebars. Oversize tubing is machined down to 7/8" to ensure a perfect, consistent diameter. High impact strength, lightweight and excellent vibration dampening. Shot peened surface finish to help prevent fatigue failure. Knurling - grip end only - increases bonding between bar and grip. No knurling in clamp area, this could cause stress on the riser and lead to fatigue failure. Anodizing - a 15 step anodizing process forms an integral coating giving protection against corrosion. Renthal's copyrighted, bonded lightweight single bolt clamping system for the cross-brace greatly increases strength whilst still allowing flex. Laser-etched positioning grid. The highest quality - 35 individual steps / processes required in the production of each bar and 58 separate quality checks made. A specially developed injection-molded crossbar pad is included with every handlebar.