Benro Move Over 12 900mm Slider C12D9Benro Move Over 12 900mm Slider C12D9 Features: Supports loads up to 26. 5 lb 35. 4" carriage travel 4 bearing carriage provides smooth and quite operation Weighted flywheel with rubber track belt drive 22mm diameter carbon fiber rails Fixed 3 8" 16 screw for attaching an optional flat base tripod head Cheese plate with multiple threaded 1 4" 12 and 3 8" 16 holes for center mounting slider 3 8" 16 adapters on end blocks for mounting on two tripods;