Heat shrink terminals have quickly become the most requested connector among professionals. The ease and speed by which these connectors create a fully environmentally sealed connection is unmatched. When working in an environment that is prone to heavy vibration challenges these connectors out perform all others. Heat shrink terminals are constructed from high-grade, fully annealed, tinned plated copper with a brazed barrel seam. The insulation is a tough, quick to shrink polyolefin with an epoxy lining.