A SIMPLE VERSATILE AND SAFE CONCRETE ANCHOR SOLUTION-FOR USE IN TEMPORARY OR EVEN PERMANENT APPLICATIONS. REUSABLE D-RING ASSEMBLY JUST INSTALL A NEW BOLT AND ITS READY TO USE AGAIN. RUGGED DESIGN FOR HARSH ENVIRONMENTS WITH NO MOVING OR FRAGILE PARTS TO FOUL-UP. SAFE ""HOOK-UP"" INDICATOR NOTIFIES THE USER THE ANCHOR HAS BEEN INSTALLED PROPERLY.; FOR FLEXIBILITY INSTALL INTO 11/16-INCH OR 3/4-INCH HOLES-ONLY STANDARD DRILL BITS NEEDED.