... phase 2,Marble,granite floor grinding 3,Wonder power saving motor electric grinder Professional Grinders ( electric grinder , domestic grinder , industrial grinder ... Three phase2,Marble,granite floor grinding3,Wonder power saving motor 4,Factory,CE,SGS ModelQ7Operating speed300-1600rpmGrinding disc230mm*3Rotating Speed300-12600rpmHP5.5HPVoltage380 ...