Description: 38x250mm Telephoto Lens Tripod Quick Release Plate Rail Slider Mount for Arca Swiss. Suitable for 200-500mm, 150-600mm lens. 250mm total length, 38mm width, double dovetail slot, 240mm slide length, equipped with a spirit level. 1/4" & 3/8" screws: for canon, nikon, sony DSLR camera and tripod / monopod ball head. High quality aluminum alloy material, light weight and durable. Specification: Material: Aluminum Alloy Size: 250x38 mm/9.8x1.5 inch Package Includes: 1x Quick Release Plate 1x Wrench 2x Screws