These Tapcon screw anchors are for exterior insulation systems and masonry. The anchor is 2 1/4 x 3/16 inches and the drill bit is 4 1/2 x 5/32 inches. These screws have a one-inch minimum embedment and a 1 1/4-inch maximum work thickness, with an ultimate shear of 400 to 730 pounds and an ultimate tension of 220 to 340 pounds. These anchors come in a box of 100.