Chain Pitch: 13mm/0.51″; Roller Width: 6mm/0.24″; Roller Diameter:8mm/0.31″; Chain Breaker Size: 9x12cm/3.54″x4.72″(L*W). Fit for 110cc 125cc ATVs, motorcycle and dirt pit bikes, quad go kart, scooter bike, etc. Come with a master link and chain breaker, you can cut the chain to required length and reconnect. Firm chain connection, not easy to break.Easy to repair and maintenance.High transmission efficiency, low fuel consumption. Over time, the chain will wear and need to be replaced.In order to avoid chain wear,bicycle chains are generally replaced every 2,000 miles.