CRATEX RUBBERIZED ABRASIVE STRAIGHT WHEEL, GRIT:FINE, MATERIAL:PURE SILICONE CARBIDE WITH AN OIL RESISTANT RUBBER BOND, FOR USE ON:METALS, PLASTIC, GLASS, AND PORCELAIN, CAN BE SHAPED WITH CONVENTIONAL WHEEL DRESSERS, DOES NOT HARDEN OR SOFTEN DURING USE, FOR SMOOTHING AND POLISHING, DIMS:1-15/16" DIA X 1/4"THICK, ARBOR:1/4", WEIGHT:1.2 OZ, SOLD INDIVIDUALLY, MADE IN MEXICO