Highlights :Epoxy-based polymer resin coating over zinc plate for excellent corrosion resistance Extra deep T-20 star recess to minimize the "wobble" at screw starting found in other brands A specially engineered head that cleanly penetrates the hard outer layer of capstock products Auger Point for faster, easier entry; helps prevent splittingEliminates "mushroom" effect common to composite decking installed using standard deck screws without pre-drilling by preventing debris from the hole from 099385064097