Suitable for general drilling of steel, stainless steel, copper, aluminum and other surfaces This is a HSS steel large step cone drill titanium bit fixed hole cutter Made of quality HSS steel and coated with titanium to reduce friction and heat Very suitable for cutting holes in various materials, including steel, brass, wood, plastic, etc Key benefits Titanium coating reduces friction and heat, helping extend bit life and maintain sharpness Large step cone design allows drilling multiple hole sizes with a single bit, reducing tool changes HSS steel construction provides durability and reliable performance across metal and nonmetal materials Fixed hole cutter design supports stable guidance for clean, accurate holes Compatibility and performance Works with common drill rigs for metalworking and general construction Effective on steel and stainless steel, as well as nonferrous metals such as copper and aluminum Also suitable for wood and plastic where larger through holes are needed Use scenarios Fabrication and metalworking: drill mounting holes in steel brackets or sheet metal for frames and supports Electrical and plumbing projects: create holes in copper or aluminum panels, housings, or cases for wiring and fittings DIY and woodworking: enlarge or create through holes in wood or plastic components for hardware, cable passthroughs, or craft projects