【5PCS 8X8mm Set】Our Countersink drill bit sets 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 bits, very suitable for drilling holes, opening range is 2.8-4mm, and adjustable cutting height: 2.5-10.5mm.
【Premium Material】 These countersink drill bits are made of high quality alloy steel, carbide tip: YG8, durable and corrosion resistant. High hardness and wear resistance, convenient and quick to drill a hole.
【High Efficiency Design】Quickly and accurately drill a smooth hole. Better in centering and no skid. It can effectively prevent the accumulation of debris retention, improve the drilling efficiency.
【Clean and tidy】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 with the drill set.
【Widely Application】Perfect for wood, fiberboard, particleboard, plywood, plastic, PVC, rubber, etc. Suitable for drilling machines with chucks such as lithium electric drills, hand drills, bench drills, etc. Widely used suitable for DIY, home and general building or engineering using, etc.

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