KEUE CNC Nano Blue 4*50*60 High-hardness Spot Drills Double-edge Chamfering Cutter Tungsten Steel Shank 3-Year Warranty for
These 2-flute solid carbide spot drills adopt premium nano-blue high-hardness coating, with 60° point angle, 4mm cutting diameter and 50mm total length. Purpose-built for hardened steel up to HRC60 and stainless steel, they handle centering, spotting and chamfering on CNC machining equipment.
The advanced nano-blue coating provides outstanding wear resistance and thermal stability for high-hardness material machining. Precision-ground sharp cutting edges ensure precise centering positioning, smooth burr-free chamfers and stable dimensional accuracy in continuous high-speed operations.
Suitable for pre-drilling centering, spot facing and edge chamfering of metal parts, they integrate multiple functions to cut down tool change frequency. They feature extended service life, lower comprehensive tooling costs and effectively improve overall machining productivity.
