Forney 54825 Connector, Heat Shrink, 10-12 AWG Color coded tubing with wire gauge imprint provides easy identification The barrel is created from one seamless piece of metal that eliminates the problem of the barrel opening Provides outstanding wire contact, increased current flow and superior tensile strength Translucent, adhesive-lined polyolefin tubing that allows visual inspection, prevents wire corrosion and provides a waterproof seal Conforms to automotive manufacturer's specifications for wiring repairs necessary for maintaining electrical warranties