This Power-Bolt+ Heavy Duty Sleeve Anchor by Powers Fasteners is a torque controlled, heavy duty sleeve style anchor which is designed for consistent performance in cracked and uncracked concrete. Suitable base materials include normal-weight concrete and sand-lightweight concrete. The anchor is manufactured with a zin Dewalt - 6913SD-PWR - 3/8" x 3" Power-Bolt+ Heavy Duty Sleeve Anchor (50/Pkg.)