Features: This rear chain hub adjuster spanner tool is specially designed single sided swinging arm spanner that makes adjusting the chain tension easier than ever before! Made from high-quality materials like carbon steel and chromesvanadium alloy steel, this tool is both strong and lightweight, making it easy to carry in your motorcycles toolkit. Designed for use by motorcycles enthusiasts and mechanic alike, this tool is perfect for anyone who wants to keep their running smoothly and efficiently. Whether you are on the road or working in the garage, this versatile tool is perfect for quickly and easily adjusting the chain tension on your motorcycles. With its precisionengineering and durable construction, this rear chain hub adjuster spanner tool is sure to become an essential part of your motorcycles maintenance routine! Specifications: Material: Carbon Steel, Chromium-Vanadium Alloy Steel, High Carbon Steel, Cast Steel Size:As Picture Shown Color:Silver/Black Package Includes: 1x Spanner Tool note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.