customer_service@maxtool.com or call 1-800-629-3325 (option 3) Monday -Friday 6am to 6pm PST support@maxtool.com or call 1-800-629-3325 (option 3) Monday -Friday 6am to 6pm PST This manual provides information regarding the operation and maintenance of these products. We have made every effort to ensure the accuracy of the information in this manual. We reserve the right to change this product at any time without prior notice.