Test, clean and restore 4/5 pin trailer connections. Tester will verify tow vehicle is sending proper signal to the connector, while cleaning tool removes corrosion and verifies proper pin size on both male and female truck/trailer plugs. For use with 4/5 flat connectors.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov