The Big Ben frame is ready to paint in seconds with any 18-roller cover, standard or jumbo diameter. Cover installation and removal is quick and easy since there's no hardware to adjust or tools required. The extra-strong polypropylene construction means the frame is tough, rust-proof, and a breeze to clean. Lock the Big Ben onto a Sherlock GT pole for no-twist painting, or use it with any threaded extension handle. The Wooster Brush Company has been manufacturing innovative, high-performance painting tools right out of Wooster, Ohio USA since 1851. Our trade names include Ultra/Pro, Advantage, Yachtsman, Shortcut paintbrushes; Super/Fab, Super Doo-Z roller covers; Sherlock frames and extension poles; Jumbo-Koter minirollers; and Prep Crew surface prep tools. You can feel confident knowing Wooster is the name behind your painting tools.