Description: Mini Desktop Camera Rail Car With Quick Release Plate is Suitable For SLR,Camera, e.g:For Canon 5D2 60D 7D 550D, For Nikon d7100. Precision extruded industrial grade anodized aluminum construction,hard coated polyurethane wheels,loading capacity up to 10KG. Engineered to have scaled adjustments to make precise shot sequences and precise adjustments to the shooting process. High quality durable and sealed bearings on both sides of each wheel,adjustable aluminum axles can also be locked in place. 1/4" adaptor screw; Can use with DSLR Camera, ball heads, fluid drag heads, and most other tripod heads. Specification: Material: Aluminum alloy, Silica gel. Loading Capacity: 10kg Body length(Approx.): 170mm Wheel-to-wheel distance(Approx.): 200mm Wheel diameter(Approx.): 65mm Package Includes: 1x Dolly Camera Car.