@@ Now you can use the Interfit Pro Series softboxes with your lighting system! A range of fifteen professional quality softboxes are available. They are manufactured from heat resistant materials making them suitable for use on both flash and quartz halogen lighting units up to 1000 watts. Their two layers of diffusion produce very even edge to edge light across the entire face of each box. Four shapes of softboxes are available with a wide range of sizes for each shape. @@ The Interfit Pro Softbox range is designed to fit onto the majority of studio flash units with different optional adapter speed rings sold seperatly.