HSS Drill Bit 4.2mm DIN338 – Sleeve Design

High-speed steel (HSS) drill bit with 4.2mm diameter and DIN338 standard geometry, featuring a sleeve design for secure chuck grip and precise hole drilling. This bit is hardened for extended tool life and suitable for drilling into mild steel, cast iron, and general workshop materials. Ideal for electricians, engineers, and maintenance professionals requiring reliable metal drilling.