Easy to Use: Drill a hole in concrete (Recommended 1-9/16 in deep x 1/2 in wide ) and fit the expansion anchor in; Insert the hand setting tool into the anchor bolt with its thinner end; Hit it with hammer till its shoulder is level with the top of the anchor (the anchor expand by then) Drop in Anchors: Total thirty pieces of 3/8 in-16 female thread drop in anchors included in our package, to meet your different mounting projects need Hand Setting Tool: of hand setting tool included in our package, to save your time in searching proper tool for anchors installing Strong and Sturdy: in anchors and hand setting tool are made of galvanized carbon steel, which is rustproof, solid and wear Wide Application: Providing secure anchoring in concrete, brick or stone, in anchors with hand setting tool set is perfect for diy projects or professional fixing operations, like handrails, guardrails, shelves installation, Weight: 0.661386786 pounds, Manufacturer: Awwertse