3/8" X 3-3/4" POWERSTUD

DEWALT Wedge Anchor: Stainless Steel, Stainless Steel, 3/8 in Anchor Dia., 3 3/4 in 

These wedge anchors secure themselves using a mechanical wedging effect at the end of the fastener. They feature a zinc-plated finish to help prevent corrosion. Carbon steel models are suitable for use in Category 1 cracked and un-cracked concrete.