Every single member from our large efficiency revenue team values customers' wants and company communication for 4.5MM PITCH WW, Automotive Wiring Harness , Terminal Lugs , Tube Terminal , We set a strict quality control system. We have return and exchange policy, and you can exchange within 7 days after receive the wigs if it is in new station and we service repairing free for our products. Please feel free to contact us for further information if you have any questions. We are glad to work for every client.