HARFINGTON 2 Set 20pcs PCB Drill Bit Set 18 Shank 15mm Tungsten Carbide Micro Twist Drill Bits Tools for Print Circuit Board Jewelry Plastic Wood Soft Metal

Size Cutting edge diameter 15mm 0059 shank diameter 3175mm 18 overall length 38mm 112 special design with positioning ring 1set 20pcs micro drill bits are available to meet PCB drilling needs Material Longlasting micro drill bits are made of tungsten carbide providing a precise and easy experience with high hardness good toughness wear resistance high strength resistance to bending and heat The carbide material has cutting performance to ensure high working efficiency Features With the spiral flute design PCB drill bits can discharge chips more effectively reduce cutting resistance increase cutting speed and work efficiency and reduce vibration to maintain the stability of the cutting process Designed with a positioning ring to reduce machine adjustment time and increase efficiency Applications PCB drill bit is for the precision processing of jewelry printed circuit boards plastics fiberglass acrylic wood aluminium soft metals and other materials Used on PCB drilling machines engraving machine CNC lathes machining center 3175mm 18 inch shank diameter to fit most rotary tools Notes Take good control of your CNC speed Use a coolant or lubricant to reduce friction and heat during drilling Hold the drill bit steady and perpendicular to the surface for accurate drilling Keep the drill bits in a secure case to prevent damage to the delicate cutting edges.