#100 Roller Chain 15-Tooth Triple Sprocket 3-Strand 1-1/4" Pitch 60mm Bore

Used condition.
3-row sprocket.
#100 roller chain size, 1-1/4" pitch.
15-tooth.
60mm metric bore.  18mm keyway width.  
4-1/2" length thru bore.
6-1/2" OD.