This sprocket is 117.4 mm outside diameter with 73 trapezoidal teeth and close to a 5 mm pitch. One face has a flange. The bore is 10 mm and has a 3mm keyway molded in. The thru-bore width is 16.6 mm, and the face of the sprocket will accommodate a belt up to 15 mm wide. It is fabricated in a black thermoplastic which appears to be glass-filled. Unused
