chain sprocket,sprocket wheels,gears, Teeth :10 Pitch diameter : 6.47 inch Outside diameter : 6.20 inch Bore: 1.57/1.97 inch chain sprocket,sprocket wheels,gears,componentsTeeth :10Pitch diameter : 6.47 inchOutside diameter : 6.20 inchBore: 1.57/1.97 inchOur company has been qualified with ISO 9001:2000 quality system. The production strictly complies with the standard and procedures of ISO 9001, ...