Tools set in a smart system. Perfect in every detail, Strong points and advantages The swivel coupling prevents the hose from twisting. With RFID chip for automatic dust hose detection. Suitable for anti-static dust hose D 27/32, anti-static swivel coupling for connection to the vacuum cleaner's intake, outer diameter Ø 58 mm, retail packaged, All-inclusive warranty http://www.festool.se/service