HEADSET CC INT 110SERIES 1-1/8×1.5 BK IS41/28.6/H9|IS52/40/H1Features-Cups and covers made of 7075 T-6 Aluminum, made in the USA 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-Dual-Seal crown race provides excellent seal efficiency with low friction-Premium, sealed stainless-steel bearings-Made In USAItem Specifications-Size:1-1/8` to 1.5`-Color:Black-SHIS:IS41/28.6|IS52/40-Cup:41/52-Steerer OD:28.6-Race:40-Stack Height:10