Features: 1._x000D_ Car tool ratcheting switch on head spanner. 2._x000D_ Made of alloy steel material. 3._x000D_ It is durable and convenient. 4._x000D_ Simple design and easy to use. 5._x000D_ Forward and backward working. 6._x000D_ Specification: Size:as the below picture shown(Diameter Approx.:17mm,19mm)_x000D_ Material: Alloy steel PackageList: Note: 1.Can not be used as a hammer. 2.Do not take casing plus. 3.The use of the surface should be clean, Gear oil at. 4.Please ensure what you received is as expected and check compatibility with measurement before purchase. 5.Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 6.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. 7.Instruction is Not included. Package included: 1x Spanner