• Step-Down Wire Splicing: Connects a larger 8 AWG wire to a smaller 12 or 10 AWG wire, creating a secure, in-line connection between wires of different sizes. • Waterproof Adhesive Seal: Features a heat-activated adhesive lining that melts and flows to create a complete, environmentally sealed barrier against moisture, saltwater, and corrosion. • Allows Visual Inspection: A fully transparent, crystal-clear heat shrink body allows for visual confirmation that both wires are properly positioned and crimped before and after sealing. • Superior Strain Relief: The durable polyolefin tubing shrinks snugly around the connection, providing robust strain relief and protection against vibration and abrasion that can cause wire fatigue.