XMSSAA Step Drill for Stainless Set of XMSSAA Hex Shank Drill Titanium Aluminum Nitride Coated Cobalt Spiral Drill for Bamboo Shoot M35 Steel, 2, Bit,

[HRC89 Hardness] This step drill is made of HSS-Co M35 steel and has a titanium nitride coating on the surface, resulting in a hardness of HRC89. It offers superior cutting performance compared to standard steel step drills. It is also wear-resistant and heat-resistant, reducing heat generated by friction. [For Stainless Steel] This is an essential tool for drilling holes in stainless steel, iron plates, aluminum plates, wood, vinyl, resin, etc., as well as for home DIY projects, enlarging pilot holes, chamfering, deburring, etc. A must-have item for home or business use. [Industrial-grade TiAIN coating] The TiAIN titanium nitride coating provides a surface hardness of 89 degrees, allowing it to withstand the stresses of high-speed rotation. It forms a hard protective layer of A1203 during drilling, improving the drill's high-temperature and abrasion resistance, making it ideal for high-speed drilling. [Scope of Application] High stability and long life are noteworthy points! The step drill gradually expands holes from small to large, allowing for drilling multiple sizes and correcting hole enlargement. The hexagonal shaft also allows it to be used with impact drivers, electric drills, and cordless drills. Set of 2: 4-12mm ＜9 steps＞ (4, 5, 6, 7, 8, 9, 10, 11, 12). 4-20mm ＜9 steps＞ (4, 6, 8, 10, 12, 14, 16, 18, 20). Includes a step drill storage case. This step drill is made of HSS-Co M35 steel with a titanium nitride coating on the surface. This gives it a hardness of HRC 89, providing superior cutting edge performance compared to standard drills. It also offers wear resistance and heat resistance, reducing heat generated by friction. It is compatible with a wide range of materials, including stainless steel, steel plate, aluminum plate, wood, vinyl, and resin, making it ideal for a wide range of tasks, from home DIY to industrial use, including drilling, enlarging pilot holes, chamfering, and deburring. The TiAIN titanium nitride coating increases the surface hardness to 89 degrees, withstanding stresses at high rotation speeds and improving the drill's high-temperature and abrasion resistance. The hexagonal shaft also makes it compatible with a variety of drills, including impact drivers and electric drills. It comes in two sets of 4-12mm and 4-20mm, each with nine sizes. A step drill storage case is also included.