U.S. Duster Company Cobweb duster rod 3 section extensionPLUS ONE FREE MAGIC MICRO FIBER CLEANING CLOTH. Extension Rod and Extension Duster Pest Control DusterTELESCOPING HANDLE machine washable, clean cobwebs, clean hard to reach places, fans, shelves, beams.How we calculate 20 feet Duster and Extension height 12 feet extended add your height plus arm length and and have about 20 feetTHREADED NOZZLE THAT WILL ALSO ATTACH TO A PAINT ROLLER.