The Ultimate Fiberscope series, from SAS R&D Services, offers a special fiberscope for SWAT and special operations applications. This 8.5mm diameter scope has a channel through which various tools can be passed, such as a microphone, magnetic lifting and three finger tools. Available either separately or as part of a Master Kit of Inspection equipment that includes a video camera with USB infrared illumination and various accessories all contained in one transport case. Other fiberscopes are available that offer 20 feet or more of working length.