[THIN & ] The thickness is 6mm, and the length of it is 70mm. Weighs only 13g, it is made by Aluminum Alloy, very sturdy and , easy for storage. [ANTI-OFF DESIGN] The safety pins on both side prevents your accessories from accidentally sliding off. [1/4Inch Screw Installation] Mount the rails on the top or side of your camera cage with two adjustable 1/4Inch screws for exceptional security and stability. [Robust Construction] Entirely made of solid aluminum alloy, the rail set is to rust, scratches, and impacts. Compatible Devices:Camera Item Weight:13 Grams Colour:Black Material:Aluminum alloy + stainless steel Package Contents: 1 * slider 2 * screws 1 * wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.