The Dura-Block Division ( www.dura-block.com ) carries products specializing in the Autobody and Marine repair industry. The patented Dura-Block conforms to the contours of the sanding surface yet has a hard-enough surface not to dig into fill material. The Dura-Block is the acknowledged gold standard with professionals in the autobody repair and refinishing industries and is available worldwide. Dura-Blocks are just one of the patented quality products supplied by Dura-Block.