Strong and Durable: Made from titanium-coated high-speed steel, ensuring they are perfect for both softwood and hardwood applications. Durable Adjustable Countersink Drill Bits Set - 12 PCS. Upgraded 12-Piece Set: Includes 5 countersink bits (#4, #6, #8, #10, #12), 5 replaceable drill bits, 1 60mm magnetic extension bit holder, 1 Allen wrench, and a convenient storage case.
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