The Ilsco CTL is a SureCrimp copper compression sleeve designed for reliable electrical connections. It features a long barrel and tin plating for enhanced durability and conductivity. This compression sleeve is UL and CSA recognized, ensuring it meets stringent safety and performance standards.This is a SureCrimp copper compression sleeve with a long barrel and tin plating. It is designed for 500 AWG conductor size and is UL and CSA recognized.