The ILSCO SURECRIMP Copper Compression ERGOT is designed for reliable electrical connections. Constructed from durable copper, this compression connector ensures a secure and long-lasting joint for your wiring needs.This ILSCO SURECRIMP ERGOT is a copper compression connector. It is designed for conductor size 500, features 2 holes with a 1/2 inch lug size, and a hole spacing of 1 3/4 inches. The connector has a standard barrel.