This EH series is interchangeable with HANSEN HA15000 SERIES, PARKER 6600 SERIES, EATON AEROQUIP 5600 SERIES, FASTER ANV SERIES, FASTER AGRI SERIES, DNP PAV1 SERIES, STUCCHI BIR SERIES, STUCCHI IRV SERIES, DIXON K SERIES, VOSWINKEL IA SERIES, and SAFEWAY S56 SERIES. Steel Product. The 75 series is a poppet-type quick coupler compatible with ISO 7241-1 -A standards. Constructed from carbon steel with zinc plating, it ensures global interchangeability and is available in sizes from ¼'' to 2''. Due to its versatility, the 75 series is widely used in hydraulic systems, particularly in agricultural and industrial applications.