Note that the product here refers to the mandrel or holder for the sanding bands, not the sanding band itself. If you mean does the sanding band remove material on a piece of anodized aluminum, the answer is most likely yes. It would depend upon the grit of the band, speed setting of the Rotary Tool and the pressure applied.
I think you mean sanding band... It took me a few seconds to figure how the mandrel operates too. You need to pull the drum portion outward from the shaft in order to release the pressure on the band. If you look at the picture the blue collar is flush with the drum when in the locked position. When you pull the drum away from the shaft the pressure is released from the band and it can easily be removed or inserted. Once the band is in place, push the drum back toward the collar and it will be secured and ready for use. Hope this is helpful.