Metallics JDEA38 3/8 x 3/4 x 1-1/2 Double Expansion Anchor Zinc Alloy (50 pieces per jar)

The Double Expansion Anchor is manufactured of rustproof zinc alloy and is used with machine screws or machine bolts. These Anchors work well in soft masonry, as it sets, the two opposing wedges pull towards each other, expanding the full length of the anchor body.