Sumitomo Electric Industries MLDH1100L12 Drill Bit

Sumitomo Electric Industries' MLDH1100L12 drill bit is a coated carbide, through-coolant micro long drill in the MULTIDRILL MDH family, engineered for deep-hole machining in steel and cast iron. It measures 1.1 mm in diameter and 60 mm in overall length, a 12D depth designation that suits long-hole applications while maintaining rigidity. The through-oil hole design enables coolant delivery to the cutting edge and efficient chip evacuation for small-diameter holes. This MDH model belongs to Sumitomo's micro long drilling line, specifically offering 12D depths for precise micro-holes in compact parts such as precision components and housings.