About This 【KAKILFOB Step Drill Bit】Compared to ordinary step drills and double and three special flute step drills, the cobalt step drill has a unique four special flute design that will make the entire cutting process smoother and it brings you the same pleasure as cutting a block of butter. 【TiAIN Coating】TiAlN coating has excellent characteristics as a new coating material, which can minimize the wear of the drill bit during each drilling process. It is extremely hard, can withstand high oxidation temperatures, and has excellent thermal hardness. In addition, it has strong adhesion, low coefficient of friction, and low thermal conductivity, making it ideal for demanding applications. 【Industrial Grade Materials】 KAKILFOB industrial-grade step drill set is meticulously crafted from high-quality alloy steel and undergoes multiple manufacturing processes. Each drill bit is carefully inspected at the factory to ensure superior quality and longevity—more efficient drilling. 【Versatile Use】 With its powerful drilling capability, the unit step drill bit is suitable for piercing holes in various materials, including thin metal, copper, aluminum, iron, carbon steel, wood, and plastic. It's a must-have addition to any mechanic's toolbox and can be used for a variety of home projects. 【After-sales Service】If you encounter any problems while using our products. Please contact us by email, our professional after-sales team will contact you and solve your problems in time. Overview Material : High Speed Steel (HSS) Cutting Diameter : 0.25 Inches Finish Type : Black Oxide Shank Type : Straight Brand : KAKILFOB
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