50B21 Sprocket, 50BS21, 21 Tooth Sprocket

Carbon steel with heat treated teeth, 2 set screws and keyway OD:4.521"

Please choose your required bore size

50B21 Sprocket.  This Sprocket is for use with #50 Roller Chain, and has 21 Teeth.  The number on your sprocket might be 50 B 21,50BS21. This roller chain sprocket has hardened teeth for long life of the sprocket.