Our robust Mul-T-Lock NE10H high security padlock features a hardened boron alloy closed shackle, providing top protection for a variety of general applications. Rated 4 out of 6 on the CEN scale, this tough heavy duty padlock offers ultimate weather protection and cutting resistance, ideal for outside use. The Mul-T-Lock NE10H padlock comes with a fully patented double sided key so keys CANNOT be duplicated without your permission