40B27 Sprocket, 40BS27, 27 Tooth Sprocket

Carbon steel with heat treated teeth, 2 set screws and keyway OD:4.587"

40B27 Sprocket.  This Sprocket is for use with #40 Roller Chain, and has 27 Teeth.  The number on your sprocket might be 40 B 27, 40BS27.This roller chain sprocket has hardened teeth for long life of the sprocket.