The Ring Knocker™ Self Defense Tool
A “ring knocker” is what enlisted service members jokingly refer to officers as in the military, due to most wearing their hard earned class rings from college while in uniform. Our ring knocker™ is a key chain, a bottle opener, and most importantly a defensive tool. The large opening slips over your finger and instantly gives you the advantage in a defensive situation. Made from solid aluminum. Made in America, no questions asked lifetime warranty.
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