CAULKING GUN CARTRIDGE 1QT/30OZ. This Albion caulking gun features a 26:1 mechanical advantage constructed of steel to ensure its longest durability. The product features dual clamping plates made from hardened steel, and its rugged design helps prevent bent rods, further extending rod life. In addition, its ergonomic design offers uncomplicated power distribution. All these features make the product ideal for heavy materials, difficult to pump materials and cold climates.