Alpen HSS Super Drill Bit 4mm – Bright Steel

The Alpen HSS Super Drill Bit in 4mm diameter is a premium bright steel twist drill designed for fast, clean drilling in mild steel, aluminium, and general metalworking applications. Features a four-star rated HSS Super formula for extended tool life, heat resistance, and superior performance compared to standard HSS. Ideal for trade workshops, fabrication, construction, and any professional requiring reliable bulk drilling capacity.