Indicating Silica Gel Packets The orange silica gel beads cased in a sturdy aluminum canister. The premium desiccant contains no cobalt (II) chloride, safe to use. The orange silica gel beads will turn into dark green if it is saturated. You can check the silica gel color changing conveniently in the indicator window. Microwave Reactivate Rechargeable Desiccant Dehumidifier The saturated desiccant can be reactivated in any oven at 250F and reused to prevents rust, corrosion and spoilage, ideal for protect gun, camera, telescope cases, tool boxes, silver drawers, safes, display cabinets, gun chests, storage containers and more Portable Silica Gel Packets Canister These are a perfect size for a small organizer like from Dewalt or Milwaukee designed to hold smaller tools or nails, nuts and bolts and so on. Each aluminum canister is 4 inch x 2 inch x 0.5 inch. No change in size or shape even if the silica beads become saturated with moisture. The beads will continue to feel and look dry. Multi-Purpose Silica Gel Canister Prevents Mold, Odors, and Corrosion from forming in computers and electronic equipment, jewelry, camera, lens, leather jackets, leather shoes, books, photo albums, electronics, toys, appliances etc