The Miller 5K Zinc-Plated Swivel Anchors are designed to be installed on concrete or steel structures. A variety of installation kits are available to meet your application needs. Ultimate Tensile Strength: 5,000 lbf. Maximum User Weight: 310 lb. Working Load: 1,000 lb. Swivel Anchor Features: Freedom of Movement - Innovative swivel design provides 360 degree D-ring rotation and 180 degree flip while preventing accidental gate load/roll-out when in use. Versatile Application Use - Permanent and portable structure mount options for steel and concrete. Rated for up to a 310 lb (141 kg) worker. Meets all applicable OSHA and ANSI requirements.