Rexroth bar manifolds are standardized by processing aperture and pitch, which can be superimposed on the ISO 4401 standard Rexroth modular valves. 02 specifications of up to 8 stations and 03 specifications of up to 8-10 stations, 04 specifications of up to 10 stations, 06 specifications of up to 8 stations, industrial standard surface treatment, or in accordance with customer requirements.