8mm shank screw extractor is suitable for bench drill, hand drill and conventional electric drill Woodworking countersink set comes with 5pcs drill bits set, comes in different size, enough to meet your needs Practical design countersink drill can quickly and accurately drill a smooth hole Countersink drill is made of industry grade premium high speed steel, high hardness, good wear resistance and durability Woodworking countersink is perfect for drilling holes in alloy steel, wood, nonferrous metal, cast iron and hard plastic Description Made of high speed steel, hard, wear resistant and durable. Woodworking countersink router bit can be used on twist drill bits or brad point drills to prevent excessive drill bit penetration. Great for hinge, stair book case, coffee table, chair, cabinet, closet, wall. Features Countersink drill Color: Orange. Material: Steel. Size: 2.8mmx8mm, 3mmx8mm, 3.2mmx8mm, 3.5mmx8mm, 4mmx8mm. Carbide tip: YG8. Function: screw countersunk hole. Balance: .003" tolerance. Body: Solid hardened steel. Blade: Industrial grade micro grain carbide. Package Including 5 x Countersink Drill Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.