Premium abrasive customised for Shapers Shaping Blocks. Used by the industries's leading Shapers. Shapers Block Sanding Sheets uses a phenolic and urea resins with additives of different dispersion to impart flexibility to suit the application of surfboard manufacturing, Allowing the abrasive to flex to the shape of the surfboard, without splitting or abrasives from breaking off, creating a high-performance product and that allows an extremely flexible finishing product. The No.1 Abrasives for Sanding Surfboard Glass Jobs and Foam. This paper is revolutionising the sanding of Surfboard Shaping and Glassing. Guaranteed effectiveness on both Polyesters and Epoxy.