Bigblue, well-known for its extensive range of lights, also offers a number of accessories in its catalog to complement your photo or video equipment. All its aluminum arms designed to extend the flash and light are equipped with M8 threads to add one or two 25 mm balls; it’s a thoughtful feature and much easier to adjust compared to a triple joint.recommended retail price: 12″ arm €44.90, 25 mm ball €17.