ASK
Type ASK is a roller type freewheel bearing supported by two rows of roller bearings. It is a self-contained dust protected unit, delivered grease lubricated.
CSK and CSK..2RS
Type CSK is a sprag type freewheel integrated into a 62 series ball bearing (except sizes 8 and 40).
CSK..P
Types CSK..P and CSK..PP are sprag type freewheels integrated into 62.. series ball bearings (except size 40).