Master Lock 722D 7-3/4 Inch (20cm) Long Zinc Plated Hardened Steel Flexible Double Hinge Hasp. The Master Lock No. 722D Hasp features a Flexible Double Hinge 7-3/4 Inch (20cm) long hardened steel body. The zinc plated hardened steel hasp provides added strength and weatherability. The hardened boron alloy staple offer maximum protection against cutting and sawing. The hinged body is Ideal for reaching around corners and securing hard-to-lock property. Provides peace of mind from a brand you can trust. This flexible double hinge hasp can be used with Master Lock medium and high security padlocks. Hardened boron alloy staple withstands up to 8-Tons of cutting force. Adjustable staple compensates for shrinking or sagging of door. Padlock lays flat when staple is in vertical position. Screws are concealed with hasp in latched position. Double hinge, 7-3/4" (20cm) in length. Accepts shackle diameters up to 7/16" (11mm). Mounting hardware is included for easy installation.