Braided stainless steel 300mm hose and corrosion-resistant pressure gauge. 9mm bore dia and 3/4″ connector. For accurately measuring mains water pressure. Aids in locating and diagnosing plumbing problems. Compatible with most standard domestic, garden and washing-machine taps. Braided stainless steel 300mm hose and corrosion-resistant pressure gauge. 9mm bore dia and 3/4″ connector. For accurately measuring mains water pressure. Aids in locating and diagnosing plumbing problems. Compatible with most standard domestic, garden and washing-machine taps.