Tunk. Small, easy to carry EDC, for self defense, tactical, safety, strike, tool. Milled of 6061 Aluminum, with a blue anodized finish. In 1/3", 1/2" or 3/4" thickness. Each comes with removable braided wrist strap/lanyard braided wrist. Measures 1 3/4" across.
Fits comfortably like a ring, approximate size 8, and make a fist. Acts as a deterrent or added measure of force when used.