CMC CRANKS EXTYPE As our riders continue to push the envelope, so must we. To cover the latest trend in cranksets, we've created the fourth version of our famous CMC series. By using an external bearing bottom bracket (included in the crankset), it helps spread the heavy loads by broadening the stance and stresses that normal bottom brackets bearings would have trouble comprehending. The CMC Extype Cranks also integrate a thick-walled 24mm hollow axle to give the crankset a great strength-to-weight ratio. The 4-bolt 104/64 3-ring compatible forged spider is attached via a pressure screw and circlipped securely in place for a rock solid connection. CMC Extype cranks are impressively stable and easy to install. Compatible with both 68mm and 73mm bottom brackets and available in either classic black or powder white. ................................................................................................................................................................................ Material: 4130 heat treated cromoly Arm size: 175mm with pinch clamp design Axle: 24mm 9t splined spindle Color: black / white