Specifications:This is the new HSS steel large step cone drill titanium bit set hole cutter, which is made from high quality HSS, and with the titanium coated toreduce friction and heat.It is very sui more→table for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.The 3 Cutters Come in the Following Sizes:4-12mm: 4mm, 6mm, 8mm, 10mm, 12mm4-20mm: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm3-12mm: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mmType: Step Drill BitsQuantity: 3 PcsMain Color: GoldenMaterial: High Speed Steel, TitanizingFeatures: Hex Shank, Step Drill, Tower ShapeNotes:Due to the light and screen setting difference, the item& 39;s color …