1,ground drill bit 2,drill bit set 3,burr bits 4,carbide quick bits 5,tungsten carbide drill bits Our Facility: 6 ANCA grinding machine imported ... \OEM accepted8,We can also manufacture spherical drilling tool.drill,drilling rig,drill bit,power drill9,Material:Solid carbide steel(tungsten steel)Application ... shipping options as possible,including UPS,DHL,Fedex and EMS. Ground drill bit