The Nanlite Projection Attachment for Bowens Mount with 36 Lens is designed to provide creative control and specific shadows into your video production. Included with the kit are 4 special effect gobo inserts, a round spotlight gobo insert, filter holder and case. Features include etched interior walls to prevent edge dispersion and fringing and a nylon-coated housing that allows easy handling after shooting, internally there are non-curved lenses, these will eliminate aberration and minimize distortion.