If you're looking for a versatile and tough key retractor, the security is the tool for you! the durable polycarbonate case is impact resistant and houses a strong and rugged key reel, which can hold up to 20 oz. Of keys, small tools, and other items. The split ring end fitting connects easily to your keys, and the zinc alloy carabiner is a convenient way to secure the security key reel to your belt loop or bag, and quickly unclip as necessary. The Kevlar cord will ensure your keys and tools are never damaged or Lost due to a drop.