6-60mm High-speed Steel HSS Spiral Flute Step Cone Drill Bit Hole Cutter Feature: *100% Brand new and high quality. *Made from high quality HSS steel, with the Titanium coated to reduce friction and heat *The ladder of its unique structure, a bit can open a variety of specifications of aperture *Do not need to use the center punch, compared with ordinary twist drill, more durable *Deburring, chamfering, elliptic hole enlargement, twist drill, drill, bench drill *Suitable for using to cut holes in various materials such as steel, brass, wood, plastic, etc. Specification: Material: High Speed Steel .
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