Diamond grinding needle made of high quality synthetic diamond raw materials meticulous precision, reliable quality; Suitable for electric motorcycle machine, engraving machine, electrical machinery and equipment for assembly; For ceramic, metal, plexiglass, stone, jade, wood, carbide and other super-hard materials of grinding, drilling, engraving, miniature, should be cooled with water; Major head shapes: cylindrical flat head, round cylindrical, spherical, umbrella, bullet, a small piece of shaped, pressed oval shaped, inverted trapezoidal, sharp-pointed needles, etc.