Both 2 pair of 15mm rods 8'' and 12'' can be extended to 20 inch rods
This 15mm aluminum rod combination fits for railblock support system, camera baseplate, rig handle grip, matte box, battery pack, follow focus, etc mounting on the rod
Each rod has M12 inner thread at both ends so enable you use M12 threaded connector to lengthen the rod
Still, come with M12 rod end cap to prevent accessories accidentally sliding from your rods
Aluminum alloy sturdy material, thicker and precision made