... laser tube 2.Rotary clamp,Smooth engrave 3.USB interface 4.Auto Focus,high precision 5.CE,FDA Laser engraver and cutter ... : should be selected if the thickness is more than 20mm Rotary clamp: used for processing cylinders Red light pointer : can indicate ... laser cutter,laser cutting machine, bamboo laser cutter, glass laser engraver, woodworking machine, laser wood cutter Glass ...