Blacksmith Drill Bit Set, 8 Piece 1/2 Inch Triangle Shank HSS Blacksmith Twist Drill Bits for Plastics Aluminum Copper with Storage Case(14mm, 16mm, 18mm, 19mm, 21mm, 22mm, 24mm, 25mm)

• [High quality] Blacksmith Drill Bit Set is made of hardened heat treated steel, very to use. High quality HSS drill bits have performance and durability when drill holes on plastics, aluminum/copper with a thickness of 1mm and many other types of materials.
• [Size] There are 8 different sizes(14mm, 16mm, 18mm, 19mm, 21mm, 22mm, 24mm, 25mm), Shank Diameter: 1/2inch, Shank Type: Triangle, Length: Approx. 150mm / 6inch
• [Hign performance] Blacksmith Drill Bit Set can provide the perfect cut every time, suitable for high speed drill bit. Blacksmith Drill Bit Set can fit into power tools chuck securely and eliminates slip.
• [Application] This HSS drill bit set is specially designed also suits DIY fans' tool kit, suitable for carpenter, builder, electrician, workshop, DIY, domestic crafts, amateurs, stylist,etc.
• [Easy to carry] Blacksmith twist drill bits come with a hard wooden packing case, ensure deposit safely and take easily, you no longer have to worry about losing any of the drill bits.

Specifications: Material: HSS Shank Diameter: 1/2inch Shank Type: TriangleSurface Treatment: Polishing & Nitrogenization Size: 14mm, 16mm, 18mm, 19mm, 21mm, 22mm, 24mm, 25mm Weight: Approx. 1788g Length: Approx. 150mm / 6inch Package Include: 1 Set x Drill Bit