This listing is for the nite ize brand s-biner slidelock no. 3 In black. The no. 3 Indicates that it is of medium size and objects of up to 25 lb. Weight rating can be hung from it, that means keys, key chains, key lights, keyless entry systems, or heavier items like silverware or water bottles. The s-shaped clip and its gates are made of stainless steel, and also has a slide-to-lock plastic locking mechanism that keeps items like the ones listed above from falling off clip. Is presented in retail card format. SpecificationsColor: BlackMaterial: Stainless Steel- SKU: SHORP4254.