Abrasive Disc Sanding Paper Marine Sanding Disc Paper DIAM : 100 / 125 / 150 /180MM GRIT:#16 /#24/#40/#60/#80/#100/#120/#150/#180 Designed for use with portable, grinding machines on all kinds of surfaces (rust & paint removing, feather edging, etc.). Each individual cutting grain is firmly anchored in a resin type adhesive which will withstand high grinding heat.