The Zoom Rod Softbox Kit consist of the Zoom Rod S, RFi Softbox 4-Feet Octa and a RFi Speedring. Zoom in, zoom out, with light. The Profoto Zoom Rod S is the perfect tool for creative photographers who like to think outside the softbox. It lets you shape light with minimal effort and works for both flat fronts and protruded heads. Attach the Zoom Rod S to a softbox (minimum 34cm deep) to achieve soft and hard light and everything in between. Use it both with and without a diffuser. With the diffuser, you will gain a more even light source and without it will increase the light output and generate specular reflections. The Zoom Rod S is compatible with heat-resistant Profoto softboxes and Profoto Soft Zoom Reflectors and is not for use with HMI or tungsten lights.