... .1''screen control 4. 100m motorized/manual cable CCTV Pipe Inspection: Components:Front camera, Rear camera, Crawler, Display controller, ... modify; various parameters modify settings,run log management3. Memory: parallel port, 300 G hard disk4. Output, input ports: data control ... 130mm wheelsSD230: 230mm wheelsAccessoriesHex screws; o-rings; front dust cover; rear dust coverToolsHex wrench supporting