Simple, versatile and safe concrete anchor solution. Reusable D-ring assembly, just install a new bolt and use again. Rugged design for harsh environments with no moving or fragile parts. Safe "hook-up" indicator notifies user that anchor has been installed properly. Installs with standard drill bits, 11/16", 18 mm or 3/4". Rated 5,000 lbs. Connection point swivels 360° for safety and ease-of-use. Additional replacement bolt options available. Meets or exceeds all applicable OSHA regulations and ANSI standards, including ASTM E488 Standard Test Methods for Strength of Anchors. (DBI Sala)