Product Description 1. Features: This 800-641 line splicer for 3/8'' aluminum lines. This connector/coupler cuts out the "leak" portion of the line by touching the leak point. 3. Function: These line connector kits are used to repair only the damaged section, not the whole A/C line assembly, making leaks a distant memory, thereby saving your time and money. 3. Installation: Easy to install, no special tools are needed. Note that this splicer is for the aluminum/hard line and not the rubber hose line. 4. Material: Made of high-grade aluminum, anti-corrosion, high temperature resistant, sturdy and durable. .