If you want to add lighting capabilities to your compact digital underwater photographs or video then you need a platform to mount a strobe or light. Having the right arms, try or adapter is as important as the light itself. The Bigblue Accessories Series employs the latest designs that cater to different photographic and video systems. By utilizing the best possible materials on the market, such as T6061 grade aluminum, stainless steel, fiberglass reinforced resin, etc.; Bigblue accessory series meets the demand for high quality with affordability. Each 1" (2.54 cm) ball head features an O-Ring, which greatly increases the friction and gripping force between the clip and ball head, allowing you to keep your equipment's in position no matter how heavy they are. Aluminum parts and fiberglass reinforced resin parts brings together lightweight, strong structures, and highly abrasion-resistant accessories with affordability. Bigblue's range of accessories continues to expand to cater to the needs of still, digital, video and specialty system. The 1/4" 20 Male Threaded Adapter connects to any camera housing with standard tripod mount. Adapter has an overall height of 2.5" (6.35 cm).