Matework Countersink Drill Bit Set - M35 Cobalt HSS 6 Pieces 1/4 Inch

HIGH-QUALITY COBALT MATERIALS -- MATEWORK countersink drill bits are crafted from M35 cobalt high-speed steel, Provide double protection fortified with a cobalt coating for enhanced durability, corrosion resistance, and heat resistance.This guarantees reliable performance, even in demanding applications. EFFICIENT CUTTING DESIGN -- With a five-flute design, these drill bits offer superior stability during cutting and efficient debris discharge. This design extends the blade life, ensures accurate cuts, and speeds up the drilling process. VERSATILE APPLICATIONS -- Includes 5 most popular sizes (1/4", 3/8", 1/2", 5/8", 3/4") and 1 special size 5/16". M35 Cobalt Countersink Drill is suitable for stainless steel, carbon steel, iron, copper, aluminum and most other metals as well as wood, plywood, etc. USER-FRIENDLY DESIGN -- Featuring laser-engraved step sizes, our countersink drill bits ensure clear visibility and durability during use. This design enhances convenience and accuracy, streamlining the drilling process. DEDICATED CUSTOMER SERVICE -- While our products undergo rigorous quality inspections, we understand that unforeseen issues may occur. Rest assured, we are committed to providing professional customer service. If you encounter any quality problems, please contact us via Amazon for prompt assistance and replacement.