RITCHEY WCS C220 STEMRITCHEY'S LIGHTEST WEIGHT ALLOY STEMThe Ritchey WCS C220 is 121 grams, making it the lightest, most advanced alloy stem in the Ritchey lineup. The bar clamp wraps 220deg around the handlebar to distribute clamping stress more evenly through the handlebar, faceplate, hardware, and stem body. The steer tube clamp uses three bolts instead of the traditional two to reduce clamp stress on the steer tube. The stem body is 3D forged from 7050 aluminum and internally machined to reduce the weight even further. Premium quality steel bolts are used on both clamps and use T-20 Torx heads. Features31. 8mm clamp will fit most road and mountain bars121 grams make this one of the lightest stems30% stiffer than Ritchey's 4Axis stems3 bolts on the steer clamp reduce stress on the steer tube220deg bar clamp wrap reduces stress on handlebars SPECIFICATIONSLength70mm - 130mm Rise6deg or 17degBar Clamp Diameter31. 8mm Stack42mm Intended Use Road or Mountain Weight129 grams (100MM) | Ritchey | Wcs C220 Stem | Blatte | 80, 17 Degree | Aluminum