Material- Drill bit set made of premium HSS, HRC 62-64 hard material with excellent hardness and wear resistance. Wood drill bit set offering optimum cutting power, high durability and high abrasion resistance. Ideal size hole for 5, 6, 8, 10 or 12 screws. Standard 82 Angle- These countersink bits for pilot end screws are designed to match to the most commonly used 82 carpentry screws on the market. 1 or 4'' Hex Shank- Quick-change chuck works with hammer drills and other power tools. It perfectly meets all your daily needs. The product interface size is suitable for most household drills. Simple and easy to use kit for woodworking. Multi-Purpose- Suitable for home or professional woodworking, used on wood, plastic, PVC, fiberboard, particleboard, plywood, rubber and more. Drill, countersink and counter-drill in one step. This item comes with 5 spare wicks.