Metal Drill Bit, Ruwag, 4.2mm (4 pack) BY WOODLY

The Ruwag 4.2 mm metal drill bit is engineered for drilling clean, precise holes through a variety of metal materials, including mild steel, aluminum, brass, and other non-ferrous and ferrous metal alloys (within the bit’s hardness limits). Made from high‑speed steel (HSS), the bit offers good hardness and durability for general‑purpose metal drilling when used at the appropriate speed and with lubrication if needed. Its twisted‑flute design helps to evacuate metal chips effectively, reducing heat build-up and ensuring smoother drilling and longer bit life.