Unique Two-Flute DesignFeaturing a dual-edge cutting design, these countersink drill bits eliminate chatter and ensure smooth, precise finishes. Compared to single-blade bits, they offer faster cutting, ideal for larger or deeper countersinks.

Upgraded 12-Piece SetThis EZARC countersink drill bit set includes 5pcs Countersink bits (#4, #6, #8, #10, #12), 5pcs Replaceable drill bits, 1pc 60mm Magnetic Extension bit holder, 1pc Allen Wrench,Storage Case.

Strong and DurableCrafted from premium titanium-coated high-speed steel, the countersink bits are perfect for use on both softwood and hardwood. The upgraded chamfer blade with a stepped design minimizes cutting resistance and maximizes durability.

Efficient and Clean DrillingDesigned with sharp blades and an 82-degree countersink angle, these bits deliver fast, clean pilot holes for a snug screw fit. All-in-one drilling, countersinking, and counterboring maximize efficiency.

Versatile ApplicationEquipped with a 1/4" hex shank, these countersink drill bits are compatible with a wide range of tools, including impact drills, including hand drills, bench drills, and electric drills. Adjustable depth settings accommodate various wood thicknesses, though extended use on hardwood is not recommended.