Dottie® Concrete Anchoring Screw, Series: 4560, 1/4 in Dia, 2-1/4 in Overall Length, Hex/Slotted Head Drive, Galvanized Steel, 3/16 x 4-1/2 in Drill

Faster to install than most steel anchors, yet has significant load capacities. One tool drills the hole and sets the anchor without the need to remove from the drill chuck. Has the added advantage of close to edge fastening without potential breakout. Works in poured concrete, pre-stressed concrete, cinder block, brick, and mortar, and can be loosened for adjustment or removed.