Designed to fit most corners and angles to secure hard-to-lock property. Recommended for use with Master Lock medium and high security padlocks. Heavy-gauge hardened steel protects against cutting and sawing. Hardened Boron alloy staple withstands up to 8 tons of cutting force. Rolled edges protect against prying and conceal mounting screws. Hinge pins are hidden and are virtually impossible to remove. Accepts shackle diameters up to 7/16 in Features Double-hinge hasp is ideal for reaching around corners to secure hard-to-lock property Zinc-plated hardened steel for added strength and weatherability Hardened steel body for added strength Hardened boron alloy staple resist cutting and sawing Hinge body conceals hinge pins and mounting hardware