tender for ultrasonic leak detector machine for leak detection from concealed pipe line of air brake system inlhb coaches with head phone probes, probe holder. each machine should accompany 1) leather/equivalentmake handy carrying case with adjustable shoulder strap, separate space will be (for m/c, head phone, probesor coancealed and opened pipe line) 2)probe holder with stick 3) spare battery - 05 sets. make and model:fisher: xlg-80 or skf: tmsu-1 or skf: tksu 10 or similar.