NSS45 One Way 45x85x19 Bearing Support Required Backstop ClutchNSS45 One Way Clutch One Clutch NSS45 is a one way clutch, that is used for Overrunning, Indexing and Backstopping, this type is non bearing supported, One way Bearing Sprag Clutch Freewheel and also called as Backstops. NSS45 is used in any application that requires one direction rotation, such as mining, hydraulic, textile, printing and washing machines, conveyor systems that carry products to a higher level should not be reversed because of gravity