Features Sturdy And : This counter sinker drill bit set is made of excellent ABS, 40 CrV steel and HSS material, which is sturdy and , not easy to be damaged, and has a long service life. Good Performance: This woodworking countersink drill bit set has good performance, with good chip removal effect, strong bending strength and excellent abrasion resistance. High Efficiency: This countersink drill bit set can discharge the chips in the hole quickly, which can effectively prevent the rock chips from stagnating and accumulating, and improve the drilling efficiency. Adjustable Limitation: This wood countersink drill bit set has an adjustable limitation to meet a variety of countersinking and drilling requirements, which is very convenient and practical. Wide Application: This tapered drill bit has a wide range of applications and can be used for drilling holes in wood, plastic, soft metal, fibreboard, aluminium alloy screws and other materials, which is simple and practical. Spec: Item Type: Countersink Drill Bit Set Material: ABS, 40CrV Steel, High Speed Steel Drill Head Size: Approx. 2.8mm / 0.11in, 3mm / 0.12in, 3.2mm / 0.13in, 3.5mm / 0.14in, 4mm / 0.16in PackageList: 5 x Drill Bits 2 x Wrenches 1 x Edge Seaming Punch Pliers 1 x Storage Box Package List 5 x Drill Bits 2 x Wrenches 1 x Edge Seaming Punch Pliers 1 x Storage Box