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5.5 mm HSS Drill Bit
These high quality drill bits are made of High speed steel (HSS), which is a form of tool steel. HSS bits are hard, and much more resistant to heat than high carbon steel. They can be used to drill metal, hardwood, and most other materials at greater cutting speeds than carbon steel bits.
We offer a range of sizes from 1 mm to 13 mm in diameter in 0.5mm increments. If you have a set of metric drill bits and you have broken some or some or worn out, you can replenish with these individual replacements.