[Specifications & Packing]: 100pcs Drilling & Driving Accessories: 14pcs Worm Drill Bits, 9pcs Wood Bits, 9pcs Masonry Bits, 3pcs Flat Wood Bits, 52pcs Screwdriver Bits, 1pcs Magnetic Drill Bits, 4pcs Drill Saws, 4pcs Nut Screwdrivers, 1pcs Countertop, 1pcs Nail Punch. [Assembly]: Drill bit set for wood, plywood, fiberboard, rubber, plastic, PVC tube, particle board. Suitable for home maintenance and repair. [Material]: Impact drill bits use classic high-speed steel construction with titanium coating for added capacity and durability. [Advantage]: Metal drill bit set works colder, drill more smoothly and last three times longer than standard drill sets. Dimensions and dimensions are marked on the perforated face for easy identification. Each bit is color-coded for easy identification. [Quick Replacement, Safe Installation]: Titanium bit comes in a portable and durable storage case, fits all power tools more easily and safely.