Introducing Wipedown Knives, from Hyde Tools. These joint knives are made specially for applying joint compound to high ceilings or other hard-to-reach drywall. The extra long handle is acme-threaded, allowing you to attach it to any extension pole. The blades are made of high carbon steel, ground to .055 inches thick to provide ample flex when smoothing compound. Brass pins in the handle prevent rust. The Wipedown Knife is available in 3 widths: 6-inch (Item # 09153), 8-inch (Item # 09154), and 10-inch (Item # 09155). www.hydetools.com