and a 2 1/2" length for an optimized performance

1/4-20 x 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (450)

stone and brick aggregates

with a 1/4" hex head

These fasteners feature a flathead design that provides greater stability and superior holding power

4-5/16" Carbide Tipped Hole Cutter, 1" Depth of Cut LedgerLOK Flat Head Structural Wood Screw and a 2 1/2" lengthWorks like an annular cutter, except no magnetic drill needed! Carbide tipped hole cutters are good for cutting stainless steel, cast iron, iron, sheet metal and copper. It also works well with abrasive materials like high density resin and metal plates. Has auto ejecting slug and can cut over 300 holes in stainless steel plate. Comes with Pilot Drill and Hex Key.