... Features:Included features: back-open design, Imported linear guide way, Step motor, sealed cooling system, Air Compressor and professional exhausting system, Chutian ... one machine)Focus lens: 1 pcLaser power supply 1 pcStep motor 2 pcOptional parts:American RF laser tube, American-made ... table, Side moving table, CCD camera facility, Clamp, Servo motor, Red positioning facilityMulti-head function