NSS15 One Way 15x35x11 Bearing Support Required Backstop ClutchNSS15 One Way Clutch One Clutch NSS15 is a one way clutch, that is used for Overrunning, Indexing and Backstopping, this type is non bearing supported, this is exactly the same size as any 6202 ball bearing, you will need one of the 6202 beairngs to support it, one way Sprag Clutch Freewheel and also called as Backstops. NSS15 is used in any application that requires one direction rotation, such as mining, hydraulic, textile, printing and washing