The 18 to 36° Stepless Zoom Projector Lens from SIRUI is a versatile lighting modifier to help you get greater control and power out of your light. Designed for use with COB lights below 200W, such as their Blaze or CS series monolights, this modifier attaches directly to the front of many different lights thanks to its widely compatible Bowens mount. Built-in shutters help you control your light's shape in addition to the 18 to 36° beam angle adjustments, which can be controlled smoothly, even while your light is powered on. A cooling fan helps reduce the chance of overheating, protecting yourself and your equipment when in use. A 15-piece gobo set is included, with unique shapes and projections that can be easily swapped or adjusted, as well as a 3-piece set of colored filters for creative or correctional effects.