Transform the head angle of your mountain bike with ease with up to six offset angle adjustments. Steeper or slacker adjustments from 0.5 to 1.5 degrees make dialing in the perfect geometry to attack the trail a breeze. 7075 T-6 Aluminum Internally contoured and relieved to minimize weight and maximize strength. Low-friction upper bearing seal completely seals cup from contaminants and is fully captured by the top cover with no loose parts. Interlok spacer compatible