... High speed;low noise 2.long lifetime 3.high precision Mini Low Noise Hobby Laser Cutting Machine Product IntruductionRack and pinion ... such materials as Acrylic sheet,abs double color sheet,PVC foam sheet,wooden board,marble,crystal,stone,aluminum,copper etc. Features ... 24000rpm/minMotion modeStep/servo driverStep/servodriverStep/servo driverStep/servo driver Mini low noise hobby laser cutting machine