This N Series is compatible with the LHF Feeder Series. The connectors are manufactured from an alloy material of copper, tin and zinc. These three materials produce a highly polished, precise, strong connector. Alloys have the ability to take the best attribute from each element and combine them into one great material. This alloy combination also allows a better operating temperature range and improved environmental performance. This item has been discontinued by the manufacturer and is here for archival purposes.