Steel Rear Axle Socket Tool for Owners of Ducati 748, 916, 955, 996, 998, S2R, S4R, Multistrada MH900E, Hepermotard, and Multistrada This tool is a must, for any owner. This is a combination of two tools: 46mm socket for the rear wheel nut, and 41mm socket for the sprocket retainer nut. Because it's steel, the tool will last a lifetime, and will not damage your bike parts! This tool is brand new. A must have tool for anyone working on a Ducati. Proudly manufactured and assembled in the United States.