Step Drill Bit Set (4-12mm, 4-20mm, 4-32mm)

• Set of 3 step drill bits for metal and plastic. • Gold titanium nitride (TiN) coating for increased hardness and durability. • Sizes included: 4-12mm (5 steps), 4-20mm (9 steps), and 4-32mm (15 steps). • Shank type: Hexagonal, designed for secure grip in chucks. • Suitable for drilling clean, precise holes in sheet metal, steel, aluminum, and plastics. • Can be used with standard power drills and drill presses. • Brand new condition, ideal for electricians, plumbers, and general metalworking. • Each bit can replace multiple conventional drill bits.