Kindly be noted our material and advantage as below about carbide drills.

1, cutting flute tolerance is -0.01/-0.03mm (D1-D4) ; -0.01/-0.04mm (D6-D20). Shank diameter tolerance is h6 (0/-0.01)mm.

2, Our carbide rods is K30 from ZCCCT, micro grain C2 as blank material.

3, Our design and processing is anti-vibration with strong stability.

4, Carbide rods are grinding and processing by Germany imported automatic CNC grinding lathe.

5, The grade is suitable for rough slot and fine machining of various workpiece

6, Our bronzed coating is made by imported Germany PLATIT equipment.

    * Multi-TiSiALN coating, 

    * hardness 3500HV, 

    * friction 0.35mm, 

    * oxidation resistance 900-1200°C ,

    * high-resistance and heat-resistance.