This is a set of 5 lenses with rings and handles for the Desisti Remington 2.5/4KW HMI Par light. Each lens affects the dispersion and intensity of the light beam in its own way, when mounted to the fixture.
The Narrow Spot lens provides a beam of 15°. The Medium Flood lens: 26° x 12°. The Wide Flood lens: 27°. The Extra Wide Flood lens: 50 x 22°°. The Frosted Fresnel lens: 42°.