Martin Finished Bore Sprocket 60BS18 1 7/16" and 47 similar items

New in original box . May have some staining and light rust marks from being in storage . SPECIFICATIONS HUB LENGTH THRU 0.791 in HUB PROJECTION 0.8 in CALIPER DIAMETER 3.8501 in MATERIAL Steel NO. OF SCREWS 2 INCH/METRIC Inch CHAIN NO. 60 PITCH DIAMETER [MIN] 4.319 in HARDENED TEETH Without Hardened Teeth NO. OF STRANDS ACROSS 1 OUTSIDE DIA. 4.7030 in SET SCREW SIZE 3/8-16 x 3/8 KEYWAY w/Keyway Set Screw WIDTH ACROSS TEETH 0.459 in OUTSIDE DIA. [MIN] 4.7030 in LENGTH THROUGH BORE 1 1/4 in SINGLE STRAND TOOTH THICKNESS 0.459 in FINISHED BORE 1 7/16 in BORE TYPE Bored to Size MARTIN NO. 60BS18 CHAIN PITCH 3/4 in SPROCKET STYLE B KEYWAY SIZE 3/8 x 3/16 NO. OF TEETH 18 HUB DIA. 3 1/2 in PITCH DIAMETER 4.319 in WEIGHT 2.7 LB EAN OR UPC 697950016283