Features:1. This is the new HSS steel big step cone drill bit titanium alloy drill bit set,2. Made of high-quality HSS steel and plated with titanium to reduce friction and heat.3. Very suitable for cutting holes of various materials, including thin steel, brass, wood, plastic, etc. Specification:Type: Pitch drillMaterial: high speed steelCoating: TitaniumStem: triangle/roundcut:4-12mm 4-6-8-10-12mm 5 steps4-20mm 4-6-8-10-12-14-16-18-20mm 9 steps4-32mm 4-6-8-10-12-14-16-18-20-22-24-26-28-30-32mm 15 levels
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7-14 business-days for delivery to the United States.
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