Fitment: This chain is suitable for 520H Chain Motorcycle. Features： -High Quality Material -Easy Installation -Precise Forging process leads to a stiff chain for better acceleration and more efficient engine work. -Lightening hole allows for a lighter chain without compromising strength while removing mud and dispersing heat more efficiently. -Improvement in transmission efficiency. Special pin with holes in both ends allow the chain to be lightened. -Edge-cut inner plate reduces friction and allows for smooth engagement with sprocket. Specification： -Style: Rivet -Chain Size: 520H -Color: Gold, O-Ring is Black -Size: As Picture Shown -Quantity: 1 pc Package Included: 1 x 520H Master Connecting Link Set