Check the listing for details. TapeTech Outside Drywall Corner Roller - 17TT. Condition: New. Listed at 172.00 USD. TapeTech Outside Corner Roller TapeTech Outside Corner Roller Head 17TT firmly embeds paper-faced corner bead on external drywall corners and removes the excess joint compound from beneath it. The nylon rollers provide a smooth surface to prevent damage to the corner bead. This is for the head only, handles are available separately. It will fit on your standard inside corner roller handle. Al's Taping Tools is the Largest Drywall Tool Store in the World! We are also a fully equipped automatic drywall tool service center with over 35 years in the industry. We sell and service all major brands of automatic drywall tools. All of our service techs are also fully trained in the operation of the tools that we sell and service. So if you are new to automatic drywall tools or have any questions, please give us a call or send us a message. We are here to help. Al's Taping Tools & Spray Equipment815 Tower DriveMedina, MN 55340