210465 Apache Hose & Belting Inc 39039138 1/2 x 1/2, 6425-8-8, Hydraulic Female Boss O-Ring, Connects Hydraulic Hoses To Control Valves, Cylinders Other Stationary Components, Proper Use Of Adapters Will Reduce System Costs By Reducing Space Requirements, Allowing Shorter Hose Lengths Improving The Availability Of Replacement Parts.