BlueCosto Stainless Steel String Wire Luggage Tag Loops Key Ring - 5/10/20/50 Waterproof and weatherproof stainless steel string Ultra-tough braided and heavy duty Can be used for luggage tags as well as key rings, ID tags, pet tags Lenght 6.8 inches, aproximately 2 inches diameter once closed Units can be combined for added lenght longer and longer as you want