8 inch lens support package includes an 8 inch rail (G010-80) and a lens support bracket (LLSB). This setup can dramatically improve the stability of your camera/lens combo. Bracket Specifications: 3.75 inches long. 2.50 inches wide. Weight: 2.70 oz (76g)One captive style slot. Double-dovetail design allows for dual clamping surfaces. Can be used with various lenses. Rail Specifications:8.00 inches long. 1.50 inches wide. 1/2 inch thick. Weight: 4.1 oz (115g). Engraved metric scale. 1/4-20 tapped hole in front for lens support or other accessories. Three captive style slots.