The color finish helps to prevent equipment loss by allowing individuals, agencies or departments to more easily identify and track property. Color can also be used to enable or reinforce a classification system such as threat level, medical condition, jurisdiction and more. The Model 753B Leg Iron features all steel construction with spun rivets. It is made to meet or exceed the National Institute of Justice standards for workmanship, mechanical strength, tamper resistance and corrosion resistance. The 15" chain effectively limits range of motion. Now with an improved internal lock mechanism for increased tamper resistance, smoother ratcheting action and greater durability. Lifetime warranty for manufacture defects and two keys supplied. Made in USA.