This dog tag tool can be worn on the neck like a traditional dog tag, or as a keychain or zipper pull. The needles included in this tag are extremely sharp and can be bent and used in an emergency or modified to be used as other types of needles. We recommend this tool to be pressed between two other dog tags and worn as a triplet or not worn on the neck due to the sharpness of the needles. Best of all, it includes a tool retention system, which makes each piece reusable and able to be put back into the dog tag in its original position. Made of stainless steel, the Dog Tag Sewing Kit is great to keep on hand when weight is an issue. Make sure you check out our entire selection of dog tag tools!