Reusable silica gel crystals absorb moisture to protect firearms and reloading gear from humidity. Even when saturated, the crystals stay dry to the touch and will not dampen any surface they contact. A built-in indicator changes from blue to pink to tell you when the crystals are full of moisture. To reactivate them, merely heat them in a conventional oven, over and over again, giving a lifetime of protection. They can also be used to protect equipment like cameras, electronics, or valuable collectibles. Available in different sizes, depending on the area you need to protect: 40 gram size is perfect for gun cases and tool boxes; 750 and 900 gram sizes are ideal for safes, vaults, lockers, large cabinets. Several packs may be used together for larger safes or even storage rooms.
Big Book Catalog, Issue:70, Page:354
Sinclair, Issue:5B, Page:242
SPECS: 40 Gram protects 3 cu. ft. - one drawer, individual gun, or a camera. 2" (5.1cm) x 4" (10.2cm) x 1/2" (1.3cm) flat aluminum can. 450 Gram protects 33 cu. ft. 7" (17cm) x 4-1/2" (11cm) x 2" (5cm) corrugated carton. 750 Gram protects up to 57 cu. ft. 6" (15.2cm) high x 4" (10.2cm) dia. steel can. 900 Gram protects 66 cu. ft. 6" (15.2cm) x 3" (7.6cm) x 8-1/4" (21cm) corrugated carton.