1.80W Long life laser tube 2.Rotary clamp,Smooth engrave 3.USB interface 4.Auto Focus,high precision ... be selected if the thickness is more than 20mm Rotary clamp: used for processing cylinders Red light pointer : can indicate the ... . Main application: Available materials: acrylic, PVC, rubber sheet, plastic, crystal, glass, wood, bamboo, oxhorn figuline, marble, leather, cloth, double-color board ...