Loads quickly and produces a smooth, great looking finish without a lot of hard work. Uniform, aluminum oxide abrasive in a water-soluble, glue base removes machine marks, pits, and surface imperfections in all types of steel, leaves the parts clean, dry, and ready to complete your favorite finish. Conveniently packed in three pound, re-sealable tubes. For best results, store unused portions of tubes in the refrigerator. Mfg: Formax SPECS: Packed in approximately 3 lb. (1.3kg) tubes. Numbers indicate grit size.