Description: Aluminum alloy camera electric dolly, help to create stable video, great for macro & low angle video shooting. This dolly with 1/4 & 3/8 screw for various camera/camcorder/smarphone clip, support up to 6kg. This autodolly can change the wheel angle to realize straight line / creative curve movement. Tabletop Autodolly move in constant speed, 5.6cm/s. Powered by 800mAh CR2 lithium battery. It also can install ball head baseplate. Shooting in a straight line and 360 degree. Specification: Material: alloy Size: 15*10*3.5cm/5.9*3.9*1.4inch Package Includes: 1Piece Mini Dolly Car 1Piece Wrench 1Piece Plastic ring 2Pieces Screws