NEF Self Drilling Screw Assortment, Hex Washer Head Drill Point Screws, 500 Piece Kit Hex Washer Head Self Drilling Screw Assortment with Drill Point - 500 Pieces Sizes #8, #10, #12, and #14 Lengths 1/2, 3/4, 1, and 1 1/2 Inches - See Second Image for detailed Product Information Heavy Duty, Professional Grade Zinc Plated Steel Enjoy some of the highest quality fasteners on the market!