Material: full heat treated 4130 crmoSteerer tube size (inch): 1 1/8Steerer tube length (mm): 158Height (mm): 315Bearing race: integratedDropout size (mm): 10mmOffset (mm): 30Compression bolt: 24x1.5mmCompression bolt tool: 6mm allen keyExtra info:new thougher sterrer tube,new improved clearance for 2.4" tires,designed for the streetsNew Investment Cast Dropout DesignWeight (kg): 0.950Color: black, navy, chrome