InSight IP-21 3.1x4.1cm Single C/stream Periapical F-Speed film which is also used with holder for bitewing x-rays Super Polysoft packets. High speed x-ray film for intra-oral radiography (F-speed), Carestream Dental's fastest intra-oral x-ray film. High contrast levels, high resolution, compatible with the Carestream Dental Safety light filter GBX-2. Can be processed manually or in a suitable automatic processor.