This flawfinder system is a non-destructive crack detection system. Benefits include Industrial recognised NDT system. Portable & easy to use & cost effective. System Kit comprsing of 1 each of the following. 1 Flawfinder Cleaner Spray. Size. 300ml 1 Flawfinder Developer Spray. Size.400ml 1 Flawfinder Dye Penetrant. Size. 300ml