Quick view AZUSA 9 Tooth 40 41 420 Chain 11/16 Bore, No Keyway, 5/16-18 Set Screw, "B" Sprocket Made of case-hardened steel and hobbed teeth, "B" Type Sprockets have a hub on one side only. Unless otherwise noted, "B" type sprockets have two 5/16-18 set screws. $12.95 $11.66 Add to Cart
