1/2/5/10pc 45# Steel Gear With Step 04C 9T/10T #25 Chain Drive Sprocket Wheel Bore 5/6/8/10mm Pitch 6.35mm For 1/4" Roller Chain

High-concerned chemical：None isCustomized：Yes Standard or Nonstandard：Standard Processing：Hobbing Model Number：04C 9T/10T Material：Carbon Steel Origin：Mainland China

High-concerned chemical: None isCustomized: Yes Standard or Nonstandard: Standard Processing: Hobbing Model Number: 04C 9T/10T Material: Carbon Steel Origin: Mainland China