From old stock. Had some rust and staining and I cleaned it up a bit. Has never been on a machine. Buyer will receive the sprocket shown. 40 Chain Number 1 Strand 22 Teeth Without Hardened Teeth B Sprocket Style DESCRIPTION Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat. FEATURES Tolerances meet or exceed ANSI standards Manufactured of high carbon steel Precise machining and processes ensure consistent finish and high quality Bores are concentric to pitch line, minimizing run out SPECIFICATIONS BORE TYPE Reborable SERIES B WIDTH ACROSS TEETH 0.28 in INCH/METRIC Inch PITCH DIAMETER [MIN] 3.510 in MARTIN NO. 40B22 OUTSIDE DIA. [MIN] 3.7800 in HARDENED TEETH Without Hardened Teeth OUTSIDE DIA. 3.7800 in CHAIN PITCH 1/2 in HUB DIA. 2.88 in NO. OF STRANDS ACROSS 1 BORE RANGE [MAX] 1.8800 in BORE STYLE Minimum Bore MATERIAL Steel CHAIN NO. 40 BORE RANGE [MIN] 5/8 in LENGTH THROUGH BORE 1 in KEYWAY No Keyway or Setscrew NO. OF TEETH 22 SPROCKET STYLE B HUB LENGTH THRU 0.716 in CONSTRUCTION Solid CALIPER DIAMETER 3.2 in PITCH DIAMETER 3.510 in WEIGHT 1.96 LB EAN OR UPC 697950005225