Dura-Block 6” Half Round Hook & Loop “TACO” Hard Sanding Durablock AF4416Get an professional finish with top of the line sanding blocks from Dura Block. Great for wet or dry sanding, the blocks are made from patented closed cell EVA rubber. They are sized and shaped to create flawlessly flat surfaces and or detailed contours without ripples or gouging. The AF4416: Uses 6 hook and loop sand paper discs of your choice. Can be used wet or dry. Can be used flat, on edge or on the curved contour.