Overview Reviews Product Description 1/4" Stainless Compression Fitting Kit - 1/8" NPT Thread THREAD: 1/8 NPT INCLUDES: Nut and ferrule. NOTES: Compression ferrules are single use and must be replaced when replacing probes. Product Videos Custom Field Product Reviews Write a Review Write a Review × HALTECH Haltech 1/4" Stainless Compression Fitting Kit Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *