uxcell Micro PCB Drill Bit Set, 1/8" 3.175mm Shank 0.5mm 0.7mm Tungsten Carbide Tip CNC Engraving Print Circuit Board Drilling Rotary Tool 20pcs - f22030300ux0116

• Drill Bit Size: Cutting edge diameter: 0.5mm / 0.02", 0.7mm / 0.028". shank diameter: 3.175mm / 1/8". overall length: 38mm / 1-1/2". With sharp cutting edge, milling groove and clean surface, these tool sets work quickly and cleanly, no glitches or scrap left. Wide Applications: Suitable for drilling and engraving PCB, acrylic, plastics, fiberglass, wood, aluminium, soft metals. Fit for PCB drilling machines, engraving machine, CNC and high precision special drilling equipment. Carbide Tool: High hardness, good toughness, wear resistance, high strength, resistance to bending and heat resistance. Carbide can run at higher speed than high-speed steel. Carbide material with good milling and cutting performance. Sharp Cutting Edge: Provide smooth cutting, reduce cutting force and prevent drill broken, improve the drilling accuracy. It has good cutting strength and drilling effect. Spiral chip space design for fast and clean chip removal. Tips: The drill bits are too tiny, so it is very fragile for handling. Please be careful and take good control of your CNC speed. Carbide PCB drill bits replace your CNC machines and any hand held tool. Large drill bit chip space, chip resistance, chip smooth, small drilling heat.