ΓΆ€ΒΆ Rugged construction and most components are made of Aluminum alloy for long service life, easy operation and portability. ΓΆ€ΒΆ Automatic overload relief setting as 10000 psi protects components in hydraulic system and works safely regardless of air pressure. ΓΆ€ΒΆ Usable oil capacity:800cc ΓΆ€ΒΆ Air pressure range: 120-170 psi ΓΆ€ΒΆ Output flow rate(cc/min): unload 700, load