Two cutters were designed for renovation work in inlined pipes from 150 up to 250 mm in diameter and from 200 up to 600 mm in diameter with a practical and robust construction, with which you can do different things, such as cutting, placing plugs and processing material (hat-profiles). The robot, steered by a joystick is self driving. It is further equipped with a swivelling camera. The cameras lens can be cleaned by remote control. The cutter have a strong air-motor, which can be rotated (360°), lifted (400 mm) and bent (210°).