Fulton Industries Inc. Marine Sternlite with Mounting bracket - Clamps on transom of boat or to boat seat. Will also clamp on to gunwale of some aluminum boats. 2.5 inch diameter clear-reflective lens. Height 25 inch aluminum pole has adjustable C clamp for fast, easy mounting or removal from seat or transom. Operates on two D-cell flashlight batteries. This unit is ideal for rental boats for night-time use.