Accessory "converter" to match the Quadra Lite base lens ZOOM code QL4XRH_ZM, to achieve a wide-aperture optic optic system from 12 ° to 45 ° depending on the type of led used. The converter must be used with the flat surface facing outwards. With the converter in contact with the lens, the light beam is obtained with a smaller aperture; moving it away from the lens the beam extends to its maximum aperture. It is also suitable for RGBW lighting.