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Self protection, keychain attachment that weighs just 3 oz. The knot on the end is called a 'monkey fist'. The knot covers a small steel ball bearing,
These fit right on your keychain, which makes it easier to hold and use. The parachute cord is '550', which means it is rated for 550 lb tensile strength!
We tested this on a sheet of 1/8" plywood. The Youtube short is here:
The 'after' effect on the plywood, with just a short swing:
