• For 12-10 AWG Wire: Color-coded yellow in accordance with industry standards, these connectors ensure a proper and secure crimp for larger 12 to 10 AWG wires. • Waterproof Adhesive-Lined Seal: The polyolefin tubing contains a heat-activated adhesive that melts and flows when heated, creating a robust, waterproof, and corrosion-resistant seal that protects the connection from the elements • Crystal Clear for Inspection: Featuring transparent heat shrink tubing, these connectors allow for a clear visual inspection of the wire's placement and crimp integrity before heating, guaranteeing a perfect connection. • Fully Insulated & Safe: The connector's design fully encloses the connection point, providing maximum insulation to prevent electrical shorting and protecting against abrasion, vibration, and moisture.