Alpha 4-20mm Step Drill Spiral Flute 9STSFM4-20S 07/06/2026 With an impressive air velocity

With an impressive air velocity of 115m³ per minute this unit is perfectly suited to ventilating small to medium areas inside

cast iron and bronze

Weight (gr)    590

• Marked with chain sizes

Alpha 4-20mm Step Drill Spiral Flute 9STSFM4-20S 07/06/2026 With an impressive air velocity4 20mm Step Drill Spiral Flute Drills & deburrs in one process Ideal for: Non ferrous metals, sheet steel, plastic & stainless steel up to 3mm thick Suits: Non hammer action portable power drills Self starting split point removes the need for a pilot hole 2 flute design for smooth cutting TiN coating reduces heat & increases lubricity for extended life Laser etched hole Premium HSS M2 raw material for extended life 3 flats on shank, prevents slippage