Size Name:18 Inch The Big Ben frame is ready to paint in seconds with any18-roller cover, standard or jumbo diameter. Cover installation and removal isquick and easy since there’s no hardware to adjust or tools required. Theextra-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-twistpainting, or use it with any threaded extension handle. The Wooster BrushCompany has been manufacturing innovative, high-performance painting toolsright out of Wooster, Ohio USA since 1851. Our trade names include Ultra/Pro,Advantage, Yachtsman, Shortcut paintbrushes; Super/Fab, Super Doo-Z rollercovers; Sherlock frames and extension poles; Jumbo-Koter minirollers; and PrepCrew surface prep tools. You can feel confident knowing Wooster is the namebehind your painting tools.