This SHAPE Follow Focus/ Riser/ 15 mm Rod kit combines all the necessary components in one set so you can start focusing on your DSLR or camcorder. SHAPE focus, a pair of 15 mm rods and a riser are included. The following development includes both friction and gear lens interfaces, a removable marking disc and a 15 mm clamp-on rod base. A single lever locks the half-moon base onto the rods, eliminating the need to slide other accessories to mount the tracking focus. Another lever allows you to adjust and lock the tracking focus horizontally to fit different lens diameters. The versatile SHAPE focus can be used on either side of the lens.