Check the listing for details. Wal-Board Pole Sander Head Adapter for Universal Coarse Thread Extension Poles. Condition: New. Listed at 10.99 USD. Wal-Board Pole Sander Head Adapter for Universal Coarse Thread Extension Poles The Wal-Board course thread adaptor allows you to use your standard course threaded paint pole and inside corner roller together. For attaching a sander head or inside corner roller to a painter poleAluminum constructionMore durable than plastic adapters 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 30 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