Safety Stop DesignThe quick release clamp and quick release plate of the DX40 tripod head are designed in Arca Swiss style, the bottom of quick release plate is designed with safety stop screws to prevent the camera from accidentally falling.
Wide ApplicationDX40 tripod ball head mount comes with two quick release plates, 1/4'' screws compatible with Nikon Canon and other brands of cameras. The bottom 3/8'' threaded hole is compatible with tripods, monopods, camera sliders, etc. The 3/8'' to 1/4'' screw adapter is compatible with other types of photographic equipment.