The kryptonite new york chain lock has been manufactured with four sided trapezoidal chain links made from triple heat treated boron manganese steel for ultimate strength approved to gold sold secure standard the kryptonite new york lock has been tested on the toughest new york streets versatile and easy to use both the chain and lock defy bolt cutters saws hammers and chisels giving you security that39s worth every penny first established in the early 197039s kryptonite have bui