Leofoto LCH-2 is a versatile laptop tray designed for those who need to do post-processing work while shooting outdoors. Its size of 8.9 inches allows it to fit almost all laptops of different sizes. The tray features flanges on all four sides to prevent the laptop from accidentally dropping. The tray can be mounted on ball heads or tripods via the 1/4&';&'; and 3/8&';&'; mounting sockets and Arca standard dovetail. Additionally, the tray comes equipped with a 360Adeg panning base, which allows for smooth and easy panning. Size: 390*280mm / 15.4" x 11" Weight: 737g / 1.62 lbs Base diameter: 46mm / 1.8" Mounting hole: 1/4" (can change to 3/8")