EZARC Countersink Drill Bit Set – 12-Piece, Magnetic Extension, #4–#12

Meet EZARC Countersink Drill Bit Set, a 12-piece kit designed for woodworkers who value clean countersinks and efficient drilling. The set features a unique two-flute design that reduces chatter and delivers smooth, precise finishes, especially when countersinking larger or deeper holes. Compared to single-blade bits, the two-flute design cuts faster while maintaining control, making it easier to achieve consistent results on both softwood and hardwood.

Why choose this set

Durability meets efficiency. The bits are crafted from titanium-coated high-speed steel, built to resist wear. A stepped chamfer blade minimizes cutting resistance and extends bit life, helping you complete tasks with fewer interruptions. The 82-degree countersink angle supports clean, shallow to deep countersinks with a snug screw fit, while the all-in-one design reduces the need for multiple tools mid-project.

What’s included

• 5 countersink bits: sizes 4, 6, 8, 10, 12
• 5 replaceable drill bits
• 60 mm magnetic extension bit holder
• Allen wrench
• Storage case

How it works

With a fast 82-degree countersink angle, these bits deliver quick, clean pilot holes for snug screw fits. The all-in-one design allows drilling, countersinking, and counterboring in a single pass, improving workflow.

Compatibility and care

The 1/4 inch hex shank fits a wide range of tools, including impact, hand, bench, and electric drills. Depth settings are adjustable for different wood thicknesses, though extended use on hardwood is not recommended. Store in the included case to keep bits organized and ready for your next project.