The Wohler 4705 VIS Camera Trolley, Camera Head Holder is designed for use in air ducts sized dia 6" and above or 6 x 6", in waste water pipes and air ducts as well as seamless chimneys. It can be used in combination with customary accessories such as supplementary lighting, the stabilization sleeve and coupling protection sleeve. This model offers numerous adjustment options which can be set with just one hand. The camera head is securely attached on the trolley or hangs protected below the trolley, ensuring the best possible clearance between the optics and the pipe walls. It is also possible to push the camera trolley forward in any position. Even when it tips to one side, the 4705 just keeps on rolling on.