... : more 20hours on tombstone 2.better used with CNC machine 3.support online order by Escrow 4.factory price ... 70mm,90mm,150mmUsed: hand tools, CNC machineapplication: tombstone,tile,sone,marble ,granite,glass,concrete and others hardness meterialsAbout UsLONGXIANG Tool ... your feedback is power to the development and improvement of our working and service, we sincerely invite you to leave positive ...