3 piece step drill bit, HSS step drill bit with automatic center punch, triangular tapered step drill bit coated tapered drill bit, 4mm-12/20/32mm

Descrição de 3 piece step drill bit, HSS step drill bit with automatic center punch, triangular tapered step drill bit coated tapered drill bit, 4mm-12/20/32mm

Premium Material: These step drill bit sets are made of exceptionally strong HSS steel and coated with titanium, which are wear-resistant, corrosion-resistant, rust-resistant, sturdy and durable. < p>Quick attach: 1/4" (6.35mm) hex shank works with most drill bits or bits with 1/4" chuck. Double-edged design allows for faster, more consistent drilling at low pressure. Easy to use: Step drill bit for metal fits securely into power tool drill chuck and prevents slipping . Stepped cone drill for precise drilling of holes of different sizes, optimum speed and precision. Widely used: The titanium drill is suitable for processing copper and aluminum parts, cast steel, metal spring steel, cast iron, iron and other metal materials. Widely used for drilling holes in aluminum, insulation boards, PVC boards and wood thickness up to 5mm.