Multi-Position Kit Dpvu-25 Allows Assembly Of 3- And 4-Position Cylinders, Each Consisting Of 2 Standard Advu Cylinders. Size=25, Corrosion Resistance Classification Crc=2 – Moderate Corrosion Stress, Ambient Temperature=-40 – 150 °C, Product Weight=65 G, Materials Note=(* Free Of Copper And Ptfe, * Conforms To Rohs)