[3.0  & 4.0  & 5.0mm]

[3.0mm]

[4.0mm]

3-piece drill set (0.1, 0.2, 0.2 inch (3, 4, 5 mm)), tapered tip size: 0.1 inch (3 mm), 0.08 inch (1.8, 4 mm), 0.1 inch (2.5, 5 mm), 0.2 inch (3.1 - 4.5 mm), 0.2 inch (5.8 - 5 mm), Material: High speed steel hardening hardening hardness: (4 mm), (5 mm) HRC65 - 0 inch (5 - 0 mm) HRC65.8 inch (5 mm) Drill/Impact Driver: For drilling underneath wood screws and nails; Prevents wood cracking; Double twisting for stability; Can be drilled at the same time with aluminum sash.