Rust-Blox Vapor Tabs - Rust-Blox, 12 Pack

Each "Blox" protects up to 300 cubic inches of air-tight space with time-released, corrosion-inhibiting vapors for at least one year. Spread several through tool chest, tackle box, gun cabinet. Mfg: Brownells SPECS: A 3/4'''' (19.0mm) squares. Packed in 12, 50 or 100.