Kulkoni brand 3-piece step drill bit set, typically used for drilling various sizes of holes in metal and wood.
Material: High-speed steel (HSS) with a titanium coating for durability and heat reduction.
Sizes included: 4-12mm, 4-20mm, and 4-32mm cones.
Features: Features laser-etched sizing on the bits and a hexagonal shank to prevent slipping in the drill chuck.