Check the listing for details. CDHPOWER 2pcs 415 Chain Half Link(Lock) & 2pcs Master Link-Gas Motorized Bicycle. Color: Gray, Condition: New. Listed at 12.99 USD. Key Product Features-2pcs #415 Chain Half Link and 2pcs Master Links-Material - Metal; -Color - Gray.-Heavy duty industrial use chain locks for high speed application. Product description The #415 half link and master link is built specifically for handling the stress and speed on a motorized bicycle. They are best suited for 49cc/66cc/80cc bicycle motors. Thank you for looking, if you have any questions, feel free to ask and I will do my best to get back to you promptly!Products usually shipped on the second business day and you will receive message of tracking id.CDHPOWER is registered officially in year 2012 and started business in year 2008, we can provide engine kits, high performance spare parts of engine, motorized bicycle and spare parts of bike.