Feature:1. [5 Pcs Set] This countersink drill bit set includes 5 pieces with diameters of 2.8mm, 3.0mm, 3.2mm, 3.5mm, and 4.0mm, providing versatility for various drilling needs.2. [Sturdy Construction] Our countersink drills are made of ABS, 40 Cr V steel, and high speed steel, offering strong bending resistance, and wear resistance for long lasting performance.3. [Efficient Chip Removal] The countersink drill bits feature a design that allows for efficient chip removal, quickly discharging debris from the hole to enhance drilling efficiency.4. [Adjustable Depth Stop] With adjustable depth stop functionality, these countersink drill bits can be set to meet different depth requirements for countersinking and drilling tasks.5. [Wide Applications] Suitable for drilling in wood, plastic, soft metals, fiberboard, aluminum alloy screws, and other materials, this countersink drill bit set is versatile, practical, and ideal for a range of projects.Specification:Item Type: Countersink Drill Bit SetMaterial: ABS, 40 Cr V Steel, High Speed SteelDrill Bit Specification: Approx. 2.8mm / 0.11in, 3.0mm / 0.12in, 3.2mm / 0.13in, 3.5mm / 0.14in, 4.0mm / 0.16in.Package List:5 x Countersink Drill Bits2 x Wrenches1 x Storage Box