1 Gallon Orange Indicating Silica Gel Desiccant Replacement Beads 1 Gallon of Dry-Packs brand Orange Indicating Silica Gel Beads Orange Moisture Indicating Silica Gel does NOT contain Cobalt Chloride! Great for refilling Air Compressor Desiccant Filters, Machinery using volumes of Desiccant, Etc Silica Gel beads are 2-4MM in size. Unlike other desiccants, silica gel is non-friable and won't disintegrate after repeat regeneration