Power-Tec 92047 AiroPower 170mm Extension Tube – 19261P Features and Benefits: Extension tube for use with the AiroPower kit and range of accessories. For use with the Power-TEC AiroPower push & pull body repair system, please see Part No. 91511. Length: 170mm. Extension tube. 5 different sizes available. Please see Part Nos. 92046 (125mm), 92047 (170mm), 91508 (300mm), 92048 (500mm).