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General description Sealey Double Flute HSS M2 Step Drill Bit 4-22mm is designed for high-speed drilling with precision. This step drill bit features double straight flutes that enhance swarf clearance, allowing for clog-free drilling of ten different hole sizes ranging from 4mm to 22mm, all with a single bit. It is supplied in a durable plastic storage case for easy transport and organization. Technical specifications Material: High-speed HSS M2 Hole Sizes: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22mm Model No.: AK4722 EAN: 5024209610780 Other information