3 Piece HSS M2 Spiral Flute Step Drill Bit Set3 SizesPrecision Hole DrillThree high-speed HSS M2 spiral flute step drills. Double spiral flutes for efficient swarf clearance. Allows clog-free, precision drilling of 18 different size holes with just three bits. Supplied in flip-up metal caseFeatures: Three high-speed HSS M2 spiral flute step drills. Double spiral flutes for efficient swarf clearance. Allows clog-free, precision drilling of 18 different size holes with just three bits. Size #1: dia 4-12mm. Size #2: dia 4-22mm in 2mm increments. Size #3: dia 4-30mm in 2mm increments. Supplied in flip-up metal case. Specification: Net Weight -0.51kg Size 1 -dia 4, 5, 6, 7, 8, 9, 10, 11, 12mm Size 2 -dia 4, 6, 8, 10, 12, 14, 16, 18, 20, 22mm Size 3 -dia 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30mm Further Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys01084 Loops 3 Piece HSS M2 Spiral Flute Step Drill Bit Set - 3 Sizes - Precision Hole Drill