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Overview
[High speed heat treated steel]countersink drill bits are made of high speed steel, QUENCHING treatment, so they are HIGH HARDNESS, WEAR-RESISTING and sturdy. [Different Sizes]Countersink drill bit set included 5 kinds of sizes:2.8 x 8mm, 3.0 x 8mm, 3.2 x 8mm, 3.5 x 8mm, 4.0 x 8mm, very suitable for using to multi size wood hole drilling. One tool for multi uses, improve your working efficiency. [Three Pointed Design]Quickly and accurately drill a smooth hole. Better in centering and no skid.Five-edged chamfer design fast discharge chips from the hole on both sides automatically.It can effectively prevent the accumulation of debris retention, improve the drilling efficiency. [Wear Resistant]Countersink drill bit provides superior cutting capability, high durability and good wear resistance. [5 PCS Countersink Drill Bit Set]Countersink drill bits make perfect countersink holes for flat head and plug screws, eliminating the need to split wood and allowing you to enjoy clean engineering