50SDS25 Sprocket (QD Type) filter_25B36-SB This 13V1900SK Sheave uses an

This 13V1900SK Sheave uses an SK bushing

35BS21 1/2" Finished Bore Sprocket Dimensions:

This 2BK32 Pulley 1" bore is directly interchangeable with other manufacturers v-belt pulleys

120E28 sprockets are manufactured to accept a E type QD bushing which

50SDS25 Sprocket (QD Type) filter_25B36-SB This 13V1900SK Sheave uses anThis 50SDS25 sprocket is a durable, high quality, and precision sprocket with hardened teeth that is manufactured to accept a SDS bushing. Sprockets that have hardened teeth last longer, perform better, and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #50 roller chain and sprocket. Meeting strict ANSI Standards