Concrete wedge anchor for use with Tekpost post bases. Ultra-strong 5/8-11 bolt, supplied with 5/8-11 nut. Low carbon steel, hot dipped galvanized for superior resistance in outdoor or wet environments. Select 10-inch anchor for typical concrete slab. Provides 6-inch penetration and maximum strength when Tekpost is installed with aluminum reinforcement extrusion. Select 8-1/2-inch anchor for concrete slab less than 6 inches thick or when aluminum reinforcement extrusion is not employed.