Flycam Professional 4ft Camera Slider Dolly support Motion Movie Making Equipment for Cameras up to 33 Pound / 15kg Full featured professional camera slider for heavy duty camera systems ** DOUBLE LAYER ** Aluminum Sliding Platform with Support | 4ft long | Universal Camera Plate The Linear Camera Slider fulfils the purpose of Camera Dolly Systems You can use only one tripod while using small cameras on this compact Linear Camera Slider, though you must use two tripods while balancing bigger cameras (Tripods not included) Tripod Mounting Holes : 1/4" and 3/8" | Total Length of Slider : 48" | Camera mounting plate dimensions: 4x3"