A deceptively simple yet elegant solution for front-heavy DSLR rigs and the Atlas 10 Slider . This counterweight quickly and easily slips onto the Cinevate system in a matter of seconds. The aluminum extrusion is hollow and designed to be filled with whatever materials are at your disposal such as sand or lead shot. The hard anodized aluminum caps are secured and removed with 4 bolts.The extrusion measures 8.5" x 3" x 3.25" (22cm x 7.5 x 8.5cm). Includes 1 rails block and two 15cm carbon rods.