The Shape 15mm Rod Riser System is a part of solution for advanced video accessories like matte boxes, 35mm lens adapter and follow focus mechanisms. The 15mm Rod Riser System holds the weight of these accessories so no additional weight is put on the lens. The 15mm Rod Riser System is composed of the PAPARAZZI Riser, a Sliding Rod Block and two 15mm rods (8" / 20.3 cm long).