45# Steel Idler Sprocket Drive Chain Gear, 08B Sprocket with Bearing,12 Teeth,13 Teeth,15 Teeth,16Teeth,Bore 10mm,12mm,20mm

45# Steel Idler Sprocket Drive Chain Gear, 08B Sprocket with Bearing,12 Teeth,13 Teeth,15 Teeth,16Teeth,Bore 10mm,12mm,20mm

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