1.Imported stepping motor driver 2.Auto feeding and unloading design Model List ... voltage: AC220V ±10%, 50HZ/60HZFocus lens: 1.5"/2.5" (focus length)Image form: AI, PLT, DST ... 60x40cm,100 x 60 cm,125x60cm,125x90cm,160x100cmZ axis is optional part for custom manufacturing; it can be adjusted up ... lens: 1 pcLaser power supply 1 pcStep motor 2 pcOptional parts:American RF laser tube, American-made ...