The kryptonite new york ls d lock is crafted from kryptonium steel a metal resistant to cutters and leverage attacks the double crossbar design provides double security and is shielded by a kryptonium steel sleeve this d lock has an unrivalled patented double deadbolt lock designed to be impenetrable earning it an approval to thatcham cat3 this kryptonite new york ls d lock has been tried and tested on the streets of new york kryptonite new york ls d lock features maximum security