1.cnc engraver 2engraving for marble,granmtie,sandtone,inkstone,tombstone,steles 3.water-proof, ... /minPrecision0.005mmMax feeding height300mmSpindle power2.2-4.5kwRotate speed of the spindle0-24000rpm/minHigh Frequency Spindle, continuously variable transmission ... memory, three-dimensional analog display.applicable to all types of stone and marble, granite, glass, tile, metal, wood, acrylic, aluminum ...