High-quality 3-piece step cone drill bit set made from durable HSS steel with titanium coating for reduced friction and heat. Sizes: 4-32mm, 4-20mm, 4-12mm increments of 2 mm Hexagonal 6.35mm (1/4") shank for secure grip Ideal for woodworking and metalworking Enhances drilling efficiency and tool life Dimension :- Volu. Weight (Gm) :- 158 Product Weight (Gm) :- 250 Ship Weight (Gm) :- 250 Length (Cm) :- 19 Breadth (Cm) :- 13 Height (Cm) :- 3