Functions- The Festool suction hose: Light and flexible – with a smooth exterior for significantly improved handling, a longer service life, and a tapered design for increased suction power. The CLEANTEC connecting sleeve ensures a strong attachment to the tool – keeping the hose securely connected for optimum dust extraction. Robust, smooth outer skin prevents the suction hose from becoming caught Internal, extremely flexible suction hose for maximum flexibility Conical geometry (27 mm to 32 mm) for improved suction power The CLEANTEC connecting sleeve securely connects the suction hose and power tool with a bayonet fitting The CLEANTEC connecting sleeve allows you to individually set the air flow rate using the infinitely adjustable bypass The initial and end pieces of two suction hoses can be connected to each other and consequently extended by plugging them together Antistatic Temperature-resistant to 158 °F ( 70°C) with rotating adapter and connecting sleeve with integrated bypass smooth Conical