3PCS HSS Step Bits, High Speed Steel Drill Bits Set (4-12mm, 4-20mm and 4-32 mm) Cone Hole Cutter for Wood, Stainless Steel, Sheet Metal

High-Quality Material: Crafted from durable High-Speed Steel (HSS) for superior strength and longevity, ensuring reliable performance for various drilling applications. Titanium Coating: Enhanced with a titanium coating, providing increased heat resistance and extending the life of the drill bits, making them suitable for demanding tasks. Step Cone Design: Versatile design with a step cone structure, offering multiple diameter options in one tool, eliminating the need for multiple drill bits and providing efficiency in drilling. 3 size: 4-12mm, 4-20mm and 4-32 mm, Supplied with a portable fabric bag. Enables faster, smoother drilling with minimal pressure, effortlessly cutting through wood, sheet metal, steel, and other materials. Precision-engineered to drill various hole sizes from 4mm to 32mm in diameter, ensuring optimal speed and accuracy.