Feature:1. REAL HIGH SPEED STEEL MATERIAL: Made of real high speed steel material, bring sharper opening and more efficient drilling2. OF SHARPNESS AND WEAR RESISTANT: The drill bit is of sharpness and wear resistant, hardened by quenching, possess of sharpness edge angle, high drilling efficiency3. CONVENIENT TO ACCESS AND STORE: The pull box has an independent drill slot design, the drill does not run off, convenient and quick to access and store4. FOR VARIOUS MATERIALS: HSS twist drills can be used for wood, plastic, bodhi, nuclear carving, olive pit and other materials5. 10 DIFFERENT SPECIFICATIONS: This set contain a total of 10pcs HSS drill bit with different specifications, which will meet your using needsSpecification:Item Type: HSS Drill Bit SetProduct Material: High speed steelProduct Model: Approx. 0.8mm / 0.03in1.0mm / 0.04in1.2mm / 0.05in1.5mm / 0.06in1.8mm / 0.07in2.0mm / 0.08in2.2mm / 0.09in2.5mm / 0.1in2.8mm / 0.11in3.0mm / 0.12inUses: Wood, plastic, bodhi, nuclear carving, olive pit Package List:10 x HSS Drill Bit