The Faithfull Step Drill 6-20mm is expertly designed for cutting varying hole sizes in materials up to 4mm thick, allowing seamless transitions between sizes without the need to change bits. Constructed from high-quality High Speed Steel (HSS), this drill effectively creates parallel holes, increasing in 2mm increments within a size range of 6mm to 20mm. Its versatility and efficiency make it an essential tool for professionals and DIY enthusiasts alike, ensuring precision and durability in every project.