Hydrosorbent SG40

The 40 gram silica gel unit protects 3 cubic feet of enclosed space. Top grade silica gel is contained within a compact aluminum canister that measures only 4" x 2" x ½". Provides lifetime protection for gun, camera and telescope cases, tool boxes, silver drawers, and more. It has a built-in indicator that turns from blue to pink to signal the need for reactivation. Easy to reactivate in any oven. Lifetime protection.