Irwin 10502855 5 28.3mm Step Drill Bit (10 Hole)

General description The Irwin Step Drill Bit is designed for precise drilling in thin materials, featuring a single flute for maximum control when drilling into sheet metal. Its unique flute design ensures perfect round holes, making it an essential tool for any DIY or professional project. Technical specifications Material: Industrial grade M7 high-speed steel Number of hole sizes: 10 Hole diameters: 5 mm, 7.5 mm, 10 mm, 12.5 mm, 15.2 mm, 18.6 mm, 20.4 mm, 22.5 mm, 25.5 mm, and 28.3 mm Other information A fluted shank prevents slipping in the chuck Self-centering point eliminates the need for center punching