This triple action valve includes 3 metal gear wheels servos.  It can control 3 hydraulic cylinders at the same time.
Please do not force to lock the nut and elbow fittings, or they might be broken easily.

The specifications are listed below: 
Length: 52mm  Width: 65mm  Height: 55mm Weight: 285g
Suitable for 2.5x4mm PE or Nylon hydraulic pipe
The system is made in Taiwan, and will ship worldwide from Taiwan.