A drain which requires lining but may have one or more lateral connections from other drains such as gullies or toilets. These would require lateral cutting after lining to re-open any such inlets. Before installing a liner, lateral connection points are identified and measured. Once the liner has cured, the cutter can be sent down the drain to the located connections. These connections are then cut out using a specially designed cutter unit which is powered by compressed air from a large compressor / generator. This facility is custom built within our service vehicle. The cutter unit is controlled above ground by a trained engineer working in conjunction with a CCTV monitor unit, allowing full view and control of the cutting process from the camera mounted on the cutter unit, ensuring each inlet is open and flowing correctly.