OIL FLOW SIGHT GLASS, LOW PSI, PLUG TYPE WITH REFLECTOR, TAPERED PIPE THREADS, SOLID BRASS BODY,, SS REFLECTOR, CLEAR SIGHT GLASS AND, BUNA-N-SEALS, PIPE SIGHT HEX DIA. MAXIMUM, THREAD DIA FLAT PRESSURE, IN IN IN PSI, 3/4 – 14 3/4 1.1/8 10, ., TYPICAL EXAMPLE:, – REF.: MCMASTER CAT # 102, PAGE 1270, P/N 1210K13, – REF.: MCMASTER CAT, NEW P/N 1210K34