Robust, smooth outer skin prevents the suction hose from snagging. Internal, highly flexible suction hose for maximum flexibility. Conical geometry (27 mm to 32 mm) for improved suction performance. Cleantec connection sleeve securely connects the suction hose and power tool with a bayonet lock. The Cleantec connection sleeve allows for individual adjustment of the airflow through the continuously adjustable bypass. Equipped with an RFID chip for automatic suction hose recognition. The beginning and end pieces of two suction hoses can be connected by simply plugging them together, thus extending their length. The Festool suction hose: smooth and flexible - with a smooth outer surface for significantly improved handling, longer lifespan, and higher suction performance. The Cleantec C connection sleeve ensures a secure fit on the tool - you decide when the connection is released, not chance.