These bearings fit bikes with BSA threads in the frame and 3D + Rotor crankset that has a 30 mm axle.

They are compatible with race BSA 68 mm and MTB BSA 73/68 mm.

The bearings have silicone gaskets.

Material: aluminum.

Material bearings: steel.

Crankcase removel tool for BSA30 and 3/8 "top included.