Material: Made from for M35 Cobalt steel, these precision ground drill bits are designed for exceptional durability, they withstand the rigors of drilling into tough materials without wear or breakage.
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2 x 4-42mm HSS Step Cone Drill Bit. 14 sizes, 4-42mm(4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42mm). Automatically deburr holes as you drill. suitable for workpieces with hardness below 25°, Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet.
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Strong force: The drill screwdriver set features strong force. Each edge can precisely secure screws. The reinforced screwdriver can easily pick up screws. strength does not diminish after repeated use.
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Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew. Drill and countersink for wood screws without changing bits. Black chamfer drill body material: steel 45.
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Material:HSS. Easy to Use: Engineered for user convenience, these drill bits are straightforward to operate, allowing for quick setup and effortless drilling without requiring extensive experience.
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These bits can be used dry or with water to enhance durability and reduce friction during drilling, providing options for improved performance depending on your project needs. 4pcs Drill Bit(6/8/10/12mm).
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1 4-42mm HSS Step Cone Drill Bit). 14 sizes, 4-42mm(4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42mm). 2X(Treated by Nitrogen to increase the hardness and abrasion resistance. Automatically deburr holes as you drill.
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5 Round Shank Five-Flute Chamfering Countersink Drill Bits. Material: M35 HSS Co 5%. 【Outstanding Performance】Use before drilling and installing screws. The five-flute design ensures precise positioning and chip evacuation.
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