Miche Primato EVO light bottom bracket. English threading 68mm shell width 102mm axle long. ISO taper.
Suitable for Campagnolo Chorus and Record post 1995 chainsets.
The BB is rebuildable. The right side cup is of the fixed type. The left cup is adjustable and contains a bearing which easily knocked out and pressed back in when the time comes.
The axle is hollow and made from steel.