Tivoly 11448220420 step drill bit HSS TiAlN, 20 mm, 2 mm

Tivoly 11448220420 step drill bit. For drilling stepped-diameter holes in a suitable material. Series and model designations: HSS, TiAlN. Technical dimensions and designations: 20 mm, 2 mm. •Impact Tool Compatibility: Features a robust design and shank optimized for safe and efficient use with impact drivers and impact drills. •HSS (High-Speed Steel) Construction: Provides excellent strength and wear resistance for demanding professional use. •TiAlN (Titanium Aluminum Nitride) Coating: A premium coating that significantly increases surface hardness and thermal stability, allowing for higher cutting speeds and extended tool life. •Helicoidal Flutes (Spiral Flutes): Designed for superior chip evacuation, reduced friction, and optimal comfort and control during drilling. •Split-Point Tip: Enables automatic self-centring (or "auto-centring"), allowing for direct start without the need for a pre-drilled pilot hole, even on smooth surfaces. •Hexa (Hexagonal) Shank: Provides a secure grip in the chuck, preventing slippage, especially under high torque, and is perfect for quick-change impact chucks. •Conical/Stepped Design: Allows you to drill multiple, perfectly calibrated hole diameters (4 mm to 20 mm) with a single bit, saving time and tool changes.