Chain Alignment Tool Motorcycle Street MX Dirt Sport Bikes ATV Need a quick and accurate chain alignment; This tool clamps squarely to the rear sprocket so the alignment rod can indicate sprocket alignment Blue Clamps to rear sprocket with alignment rod pointing toward the front sprocket; Aluminum Easy to use Aids visual alignment of sprockets when drive chain is adjusted suitable for all bikes Installation Instructions not included A chain alignment tool to assist the alignment of the chain sprocket with its chain; The tool is placed over a sprocket at a point where it's chain tangentially contacts the sprocket; The tool is tightened against the sprocket and becomes aligned with the sprocket; The tool has an attached pointer which extends outwardly in a direction parallel to the surface of the sprocket; The end of the pointer should align with the chain if the chain is in alignment with the sprocket Enables accurate wheel alignment