TorqueMaster 12265 Masonry Screw, 1/4 in Dia, 2-1/4 in L, T30 Screw, Steel, Star Hex Head, 1/PK

TorqueMaster Masonry Screw, 1/4 in Dia, 2-1/4 in L, Drill Size: 3/16 in, Screw Size: T30, Thread Length: 3/16 in, Head Type: Star Hex, Steel, Blue Ruspert