D40B18H Sprocket With Stock Bore
D40BS18H Dimensions:

Sprocket Size: D40B18H Tooth Count: 18 Outside Diameter: 3.140" Hub Type: B Bore Size: 5/8" Recommended Maximum: 1-1/2" Hub Diameter: 2-5/16" Length Thru Bore: 1-1/2" Weight: 1.92 LBS
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Sprocket Size: D40B18H Tooth Count: 18 Outside Diameter: 3.140" Hub Type: B Bore Size: 5/8" Recommended Maximum: 1-1/2" Hub Diameter: 2-5/16" Length Thru Bore: 1-1/2" Weight: 1.92 LBS