If you're buying a Power Torque crankset, then you need a Power Torque bottom bracket. The Campagnolo Athena 11 Power Torque Bottom Bracket mates perfectly up with the Athena, Centaur, and Veloce Power Torque cranks. From the outside, these cups look almost identical to the bottom bracket cups that work with Chorus, Record, and Super Record. But they're different. The right side cup functions the same as the right side cups on those other bottom brackets it's a shell that you fit the right side crankarm bearing into and an external clip to holds the bearingcrankarm in place. But the left side is different. Owing to the long spindle on Power Torque cranks, the left side cup already has a bearing pressed into it rather than the cup being empty and the bearing affixed to the left crank fitting into the cup. So, to repeat, if you're buying a Campagnolo Power Torque crankset, then you need a specific Power Torque Bottom Bracket. The Campagnolo Athena 11 Power Torque Bottom Bracket is available in English 68 or Italian 70 threads and are anodized a Dark Grey.