MARTIN SPROCKET & GR
4012 3/4 CHAIN CPLG HUB ; 3/4" BORE 1-13/32" HUB DIA
3/4" Bore; 1-13/32" Hub Diameter; Chain Coupling; Hub; Shaft; Finished Bore; 2.17" Outside Diameter; 1-1/4" Length Thru Bore; 9/32" Between Shaft Ends; 40 Chain; 12 Teeth; 1-1/4" Width; 4012; Keyway; Steel
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