Corded Drills, Screwdrivers -Foret Fraise Highlights Marque Generique Foret Fraise Description: Made of high quality HSS steel, with titanium coated to reduce friction and heat The scale of its unique structure, a little bit can open a variety of specifications of the aperture Do not need to use center punch, compared with ordinary drill bit, not easy to be broken Deburring, chamfering, widening elliptical hole, drill bit, drill press, bench drill Suitable for the use for drilling holes in a variety of materials including steel, brass, wood, plastic Specification: Material: HSS / High Speed Steel Surface Treatment: Gold Coated Titanium Shank Size: 1/4" Hex Shank Total Length: 4-12mm Length: about 67mm/2.64" 4-20mm Length: about 74mm/2.91" 4-32mm Length: about 102mm/4.02" 3 Cut Size: 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm) 4-20mm (4mm, 6 mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 14mm, 16mm, 18mm, 20mm) 4-12mm (4mm, 6mm, 8mm, 10mm , 12 mm) Package includes: 1x Set (3 pieces) HSS Step Drill Bit Note: Colors may be different for different display, please understand Please allow 1-3mm error due to measurement manual, make sure you don't mind before you bid