Festool 493047 Hose Sleeve, Antistatic Connector Sleeve
Use the Antistatic Connector Sleeve to connect multiple lengths and sizes of suction hoses, so you have the right length and size suction hose for your application.  Connects at rotating connector end for all Festool D 50, D 36, and D27 hoses.  Antistatic components are only effective when used as part of a complete antistatic dust extraction system, including extractors or vacuums, hoses, sleeves and couplings.  Includes one Antistatic Connector Sleeve.  Made in Germany.