Dura-Block Ultra-Flex 11" Hook & Loop Durablock AF4434Get 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 AF4434: For blocking fl at & slightly curved surfaces Velcro version allows easy removal of various paper. Great for wet or dry sanding Size: 5 8"H X 2 3 4"W X 11"L