20Pcs PCB Circuit Board Carbide Tungsten Steel -Drill Bits Set 0.10mm to 1.0mm and 1.1mm to 2.0mm (1 Each)

Diameter: 0.1-1mm: 0.1mm 0.2mm 0.3mm 0.4mm 0.5mm 0.6mm 0.7mm 0.8mm 0.9mm 1.0mm ( 1pcs for each Value ) 1.1-2.0mm: 1.1mm 1.2mm 1.3mm 1.4mm 1.5mm 1.6mm 1.7mm 1.8mm 1.9mm 2.0mm ( 1pcs for each Value ) (Positioning ring color random) Carbide rods and tungsten steel rods with high hardness high wear resistance high strength resistance to bending anti-impairment and long tool life drill bit chip space chip resistance Chip small drilling heat reduce smear. Drill has a scraps discharge space little resistance and smoothly during the scraps discharge. Using high quality materials and fine grinding process makes bit more sharp reduce cutting force and broken drill and the quality of hole wall. strictly symmetrical: beneficial and efficient cutting avoid offset drilling. Color: positioning ring color random Not accept Specify Material: Alloy tungsten steel Package Contents: 2 boxes of drill bits Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.