WBN-20/25 SWIVEL MTG 20 & 25MM ?

Swivel Mounting Wbn-20/25 For Cylinders Egz, Egn, Dsn, Esnu, Dsnu. Size=20/25, Corrosion Resistance Classification Crc=1 - Low Corrosion Stress, Ambient Temperature=-40 - 150 °C, Product Weight=67 G, Materials Note=(* Free Of Copper And Ptfe, * Conforms To Rohs), Festo