KTX Cutter #8 x 2-1/4 in. Ultra Guard Square Drive Flat-Head Coarse Thread with Nibs Double Auger Wood Deck Screws (1000 per Box)-0.FSC08214UN27 - The Home Depot
Amazon.com: Wright Tool 4774 7/16" - 1/2" Drive 8-Point (Double Square) Deep Impact Socket: Home Improvement