The one and only BIG DADDY THUNDER-MUG now in aluminum. Built from a solid Type III Mil-SPEC hard coat anodized aluminum stock bored 2" ID 4" OD and 5" tall with 1/8" fuse hole with removable set screw and includes FREE hex wrench for removal for easy cleaning. You want a BOOM! You can't get much better then this. These come with high quality black anodized matte finish. Very durable cannon that will not rust.