This EH series is interchangeable with PARKER 60 SERIES, DIXON H SERIES, EATON AEROQUIP FD45 SERIES, FASTER HNV SERIES, DNP PBVM SERIES, STUCCHI IRBO SERIES, HANSEN HK SERIES, SAFEWAY BS10 SERIES, VOSWINKEL IB-MS SERIES, and GROMELLE 635-L SERIES. Brass Product. Industrial-grade standard couplings compliant with ISO 7241-1 Series B. Full size range available from 1/8" to 2" with multiple thread options (BSP, NPT, SAE). Designed for reliable performance in demanding industrial environments.