The R-0010 Wipe Down Knife is equipped with a 9” blue steel blade and is mounted on a 661-machine grade aluminum adaptor and is attached to the Rankee R-0005 15” to 24” extendable handle. To replace blade, remove the two nuts and bolts, insert new blade and re-attach. The Rankee 9” Wipe Down Blade is interchangeable with Wall Board® 7”, 8” and 9” replacement blades. For harder to reach areas, unscrew the knife adaptor and attach it to the Rankee R-0001, 4’ to 8’ Pole handle.