Aluminum 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 aluminum, the tool is light weight, and will not damage your bike parts, but will last a lifetime! This tool is brand new. A must have tool for anyone working on a Ducati. Proudly manufactured and assembled in the United States.