Transform your drilling precision with this comprehensive 6-piece stepped drill bit set. Featuring titanium-coated bits in various sizes (4-12mm, 4-20mm, and 4-32mm), this versatile collection includes both triangular handle straight groove ladder drills and specialized saw drills. The durable construction ensures clean, accurate holes in metal, wood, and plastic materials. These professional-grade bits are designed with multiple cutting edges for faster, more efficient drilling and reduced friction. The stepped design allows you to drill different sized holes using a single bit, making this set perfect for both DIY enthusiasts and professional craftsmen. The set includes three ladder drills and three saw drills, offering sizes suitable for most common drilling applications. Each bit features precise measurements marked clearly on the surface for accurate depth control and sizing.