Dormer HSS Jobber Drill Bits 5.5mm – Pack of 10

High-precision twist drills designed for drilling into steel, cast iron, and general-purpose materials. The 5.5mm size is ideal for creating pilot holes and general drilling applications in engineering and construction work. Dormer drills are engineered for consistent performance and durability, delivering clean, accurate holes with minimal breakage. Suitable for use with standard drilling equipment.