OUTSIDE 90-DEGREE DRYWALL CORNER BEAD ROLLER by Columbia Taping Tools - Professional Contractor Grade Drywall Taping and Finishing Tools 5-Year Warranty means this tool will outlast and outperform cheap import brands Machined from solid billet aluminum and stainless steel components Contractor grade tool for professionals who rely on the quality and performance of their tools Fits all standard corner roller handles with fine threaded female ends Columbia 90 Outside Bead Corner Roller is designed to accurately align 90 degree outside corner bead. The roller makes it easier to squeeze out excess compound more efficiently. Manufactured with solid billet aluminum and stainless steel components for long-lasting use and supported by Columbia's 5-year warranty.Outside Bullnose roller available separately. Note: Requires adapter to fit standard 3/4" Male Coarse Thread painter's pole.