Mounting Kit Smbr-8-20 for Mounting Proximity Switches Sme-8, Smt-8. Size=20, Corrosion Resistance Classification Crc=2 - Moderate Corrosion Stress, Ambient Temperature=-20 - 70 °C, Material of Profile=Wrought Aluminium Alloy, Materials Note=(* Free of Copper and Ptfe, * Conforms to Rohs), Festo