The Dura-Block Division ( www.dura-block.com ) carries products specializing in the Autobody and Marine repair industry. They are a favorite among professional auto body shops for blocking all surfaces, especially large contoured surfaces. 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. Eagle National carries sanding blocks and sanding block kits with attachment methods such as hook and loop and pressure sensitive adhesive (PSA) for your sandpaper and file board paper.