Harsh environment Electrical Power and Control Connectors. Contacts will accommodate from # 22 AWG up to and including # 500 MCM AWG. Control amperage through 750 ampres. From 1 single # 500 MCM AWG up to 143 contacts of # 16 AWG. Originally designed for the Aerospace Industry. Manufactured from copper free aluminum bar stock. Suited to a wide variety of industrial applications from Automated Process Control to Wastewater Treatment facility applications.