Set of 3 countersink bits, made of high-speed steel and stainless steel, 4-12/20/32 mm, conical triangular drill bits in titanium alloy, hexagonal shank, suitable for drilling holes in steel and brass

【High-Quality Materials, Guaranteed Quality】Both the drill shank and the conical drill bit are made of high-quality high-speed stainless steel (HSS), ensuring their durability. Usage Tips: When using the electric drill, keep it as vertical as possible, avoid vibrations and tilting, and do not operate it at excessively high speeds. Time-Saving, Efficient, and Fast: The high-speed steel conical drill bit is made of this material, which reduces heat and friction, allows for rapid cooling, and automatically removes debris from the hole during drilling. Its spiral design prevents slippage, making drilling easier and more efficient. Three sizes to meet your needs: 4-12 mm, 4-20 mm, and 4-32 mm. Choose the drill bit that suits your requirements. Wide range of applications: This product can drill through thin iron sheets, aluminum sheets, insulation panels, metal sheets, PVC panels, wood panels, and other materials up to 3 mm thick. Easy to carry thanks to its nylon carrying case: This product comes with a nylon carrying case for optimal storage and protection. No more worrying about losing or damaging small items.