1 XCAN HSS Step Drill Bit 4-12 4-20 4-32mm Straight/Spiral Flute Step Cone Drill Bit Wood Metal Hole Cutter Drilling Tools Features: This is the New HSS Steel Large Step Cone Drill Titanium Bit Set Hole Cutter, which is made from high quality HSS steel, and with the TiCN coated to reduce friction and heat, It is very suitable for using to cut holes in a variety of materials including Thin steel, brass, wood, plastic, etc Specification: Type: Core Drill Bit Material: High Speed Steel Coating: TICN(Titanium Carbonit Nide Coating) Shank: Round Shank Size: 4-32mm 15 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm) 4-20mm 13 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 14mm, 16mm, 18mm, 20mm) 4-12mm 5 Steps (4mm, 6mm, 8mm, 10mm, 2mm) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Including: 1pc/3pc HSS Step Drill Bits 1