Description: Thread size: 1/8 Dial size approx. 76mm Fitted with 7/16" tube with 11.2mm inner diameter SPECIFICATION: 100% Brand New pressure gauge pressure units :PSI KPA High & low pressure gauge Blue:0-500psi Red:0-800psi Pressure units: PSI Bar Color: High pressure gauge:red Low pressure gauge:blue Features: Pressure Gauge fits for a manifold with 1/8" NPT thread. Inlet of gauge connector is 11.2mm, Fit for 7/16 inch in diameter hose Vivid dial and clear scale, easy to read in Celsius degrees .