1WIDELY USED: Universal aluminum alloy 15mm rail baseplate for most DSLR cameras, camera mount bracket, grips, followers, hoods, shoulder pads and more. 2MORE EXPANSION: There is one 1/4 inch screw and one 3/8 inch screw on the top for mounting cameras and camera stands, and more 1/4 inch and 3/8 inch holes for mounting to tripods, light stands, etc. 3HOLLOW DESIGN: 15mm rail camera base plate has a unique hollow weight saving design on the inside of the plate to reduce the weight and ease the burden of photography. 4STRONG AND LASTING: 15mm rod rail baseplate is made of aluminum alloy with CNC close machining and anodized surface, sturdy and erosion resistance. Rubber pads on the top to avoid twisting and scratching. 5LIGHTWEIGHT AND EASY TO CARRY: Professional 15mm rail camera base plate is compact and lightweight, easy to carry, a useful accessory for photography enthusiasts. 1 x Guide Rail Base Plate 1 x Wrench