Lothee 30 Pcs Micro Drill Bits Set Tungsten Carbide PCB Jewelry,0.1-3.0 Mm | Sha

Manufacturer Lothee. Material Type Tungsten Steel. Material Tungsten Steel. What materials are these drill bits suitable for?. Improve precision: micro drill bits set adopts pointed cutting edges; The spiral cutting edge can reduce the cutting force, prevent the drill from breaking, and improve the machining precision, no burrs or debris.