CSK30P One-Way Bearing Sprag Freewheel Clutch Bearing - One inner Ring Key-wayCSK30P One Way Clutch Bearing with Keyway 30mm x 62mm x 21mm Sprag Freewheel Design The CSK30P is a one way clutch bearing that features a keyway on the inner ring for secure torque transfer. Designed to allow rotation in one direction and lock in the opposite, it's a solid choice for indexing, overrunning, and backstopping applications in conveyors, gearboxes, and drive systems. 1 clutch bearing per pack Size: 30mm ID x 62mm OD x 21mm width Sprag