Parts List: 1Chain Alignment Tool Highlight [Good Material] This chain alignment tool is made of metal material, durable and lightweight. It has good anti-corrosion and anti-rust performance. You can use it for a long time. [Main Function] The tool body clips directly to the rear sprocket, so the alignment bar will indicate quick and accurate alignment of the sprocket with the chain. [Widely Uses] This chain alignment tool is suitable for motorcycles and ATVs and most motorcycle models. [Easy to Install] Clamp the machining tool on the rear sprocket and move the rear until the alignment bar is aligned with the front sprocket, use on the left or right side. [Whats Included] The package includes a set of chain alignment tool. You can use it with confidence. Product Name: Chain Alignment Tool Main Material: Metal Product Size: 51x41x31.5mm/2.01x1.61x1.24in Color (Optional): Black Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Please allow slight dimension difference due to different manual measurement. Thank you for your understanding.