SKD-1825SA-2Z engraving machine for stone has two 5.5KW water cooling spindles, it’s heavy duty type and this type stone engraving machine can engrave two stone plate at one time, it’s synchronous for dual work station. The whole machine use Taiwan square rail transmission and helical rack and pinion transmission. Steel water tank for recycling and dust proof for three axis to ensure the machine’s life. http://www.fanchmachinery.com/c...e-engraving-machine.html