Voltcraft 6mgb vga hb endoscope accessory probe diameter 5 5mm voltcraft 6mgb vga hb p the voltcraft 6mgb vga hb is a guide ball attachment that will not only protect the endoscope camera but will give it better guidance through curves the ball keeps the camera head away from the pipe wall thus preventing it being clogged up in sediment or silt p voltcraft 6mgb vga hb endoscope accessories probe diameter 5 5mm