SE 8355HH 5-IN-1 9" Dual Interchangeable Hammer Instead of 5 hammers cluttering your workbench, have only one with 5 different interchangeable faces Multi use hammer specially designed for gunsmithing, woodworking, metal work and more Threaded faces that are easy to change and stay securely on the aluminum head Includes hard-to-find copper and brass for metal work without sparks Rubber, nylon, and ABS plastic provide varying hardness for non-marring blows and less recoil