Caulk Gun Loaders speed up the refilling of caulk guns and are made for use with Albion and Newborn 2" bulk loading caulk guns. For Cox guns, the Sleeve Adapter is required. Designed to fit standard 5 gallon pails. Just two quick cranks and the gun is filled WITHOUT air pockets. Models are available to work with straight or tapered plastic or metal pails. The loader assures complete use of all the materials in your pail; dried-out, skimmed-over, and wasted materials are prevented. Fast mechanical loading eliminates time-consuming hand loading of your caulking gun or cartridge, which results in savings of costly labor. No air pockets are possible in your caulking gun or cartridge because the air-tight piston seal assures a smooth, uninterrupted flow of material from the pail to the caulking gun and cartridge. The screw type is recommended for both chinking and caulking products due to its increased loading strength. The screw type also has less moving parts to wear out. See Caulk Gun Loader Overview and Usage Tips.