NSS25 One-Way 25x52x15mm Bearing Support Required Backstop ClutchNSS25 One Way Clutch 25mm x 52mm x 15mm Sprag Freewheel Backstop The NSS25 is a non bearing supported one way clutch designed for applications that require controlled rotation in just one direction. With the same outer dimensions as a standard 6205 ball bearing, its ideal for overrunning, indexing, and backstopping functions in conveyors, printing machines, and more. 1 one way clutch per pack Size: 25mm ID x 52mm OD x 15mm width Not self supported use