0.3-1.2mm Tungsten Carbide Micro Drill Bits Set,Engraving Drill Bits Set for Print Circuit Board,Amber,Beeswax,Rough Stone,Jewelry,CNC Punching Engraving,5 x 10 Pieces

Specification:Length:Shank diameter:1/8 inchWeight:190gMaterial:Tungsten carbidePackage Include:5 x 0.3mm5 x 0.4mm5 x 0.5mm5 x 0.6mm5 x 0.7mm5 x 0.8mm5 x 0.9mm5 x 1.0mm5 x 1.1mm5 x 1.2mmNote:1.When drilling the hole,it should be in a vertical direction.Do not use too much force.Slowly twist the hole in one direction by hand.The needle cannot be broken or pried,otherwise it is easy to damage.2.It cannot be clamped on a hand drill to rotate at high speed.This way the amber will collapse.3.For the punching type,please pay attention to clean the surrounding powder while rotating.4.Grasp the tail of the drill bit by hand and slowly rotate and drill.When it is about to get through,pay special attention to reducing the speed and strength.5.If the needle feels tight when it rotates,please withdraw the needle and clean the hole and re-enter the powder.The positioning ring has multiple colors and is assembled randomly,so there is no guarantee that the color of each box will be the same.Please refer to the actual product.

• 1. Tungsten carbide micro drill bits sets are made of good tungsten steel material,ultra hardness & wear resistance,sufficient strength,not easy to break to ensure longer using,drill features of the good milling and cutting performance,Excellent cutting results to ensure high work efficiency.
• 2. 5 x 10 pieces PCB drill bits set,cutting edge diameter:0.3mm,0.4mm,0.5mm,0.6mm,0.7mm,0.8mm,0.9mm,1.0mm,1.1mm,1.2mm.Shank diameter:1/8inch;The Cutting depth of smallest size (0.3mm):0.22Inch,the cutting depth of largest Size(1.2mm):0.4Inch.
• 3. The application is very wide.The micro drill is very suitable for drilling holes in printed circuit boards,amber,beeswax,rough stone,plastic,carbon fiber,glass fiber,wood,PC board,soft metal,etc.
• 4. The drill has large chip space,low chip resistance,smooth chip,low drilling heat,and reduces smear.The chip removal space of the drill is large,the resistance is small,and the chip removal is stable.
• 5. Whether you are a DIY enthusiast or a professional,you can choose this set of products.And we provide 24 hours online service,if you have any questions,you can contact us at any time.