• High-speed HSS 4341 double spiral flute step drill.• Double spiral flutes for efficient swarf clearance.• Allows clog-free precision drilling of ten different size holes between 4-22mm with just one bit.• Hole Sizes: 4-22mm in 2mm increments.• Supplied in plastic storage case.High-speed HSS 4341 double spiral flute step drill. Double spiral flutes for efficient swarf clearance.Allows clog-free precision drilling. Supplied in plastic storage case.• High-speed HSS 4341 double spiral flute step drill. • Double spiral flutes for efficient swarf clearance. • Allows clog-free precision drilling. • Hole Sizes: 4-22mm in 2mm increments. • Supplied in plastic storage case. • Model No. AK4747Technical Specification:Nett Weight: 0.07kgSize Coverage: #2; 4, 6, 8, 10, 12, 14, 16, 18, 20, 22mmDimensions: Length: 26mm x Height: 104mmWeight: 0.072KgWarranty: Consumable