For M30 spindle based cranks only. Forged & machined heat-treated 7075 T6 Aluminium. 30mm Drive & Non-Drive bearing. 68mm Road version / 73mm MTB version.Suits 86.5,89.5 and 92mm width shellsFor 41mm diameter pressfit shellsMay also be used with other brand 30mm cranks like SRAM, RaceFace/Easton Cinch cranks, Rotor Rex/3D+ cranks, and CaneCreek eeWings (Please check dimensions)