Converts for Gunning Sausage Packs, Cartridges, or Bulk Load Material Our Most Popular Sausage Gun Quick Release End Cap CRL 12:1 Ratio Avon 15 Inch Sausage, Cartridge and Bulk Gun is made of lightweight aluminum and is ideal for waterproofing applications where wide beads of material are required. Cut the plastic cone type nozzle to deliver a bead from 1/8 inch (3 millimeter) up to 1-5/16 inch (33 millimeter) in diameter. Barrel: 2 in (50 mm) Diameter x 15 in (381 mm) Length Minimum Order: 1 Each Gun comes with three yellow cone nozzles, ladder hook and spanner wrench. Also accepts standard 10.3 fluid ounce (305 milliliter) cartridges plus bulk material. Pre-configured for 20 fluid ounce (591 milliliters), 15 fluid ounce (444 milliliters) and 10 fluid ounce (296 milliliters) sausage packs. Caulking Gun Ratios-What does it mean⅓ Extra Thrust! Today's high viscosity sealants have brought about a new age of caulking guns. The question is, what does the term "ratio" really mean⅓ Quite simply, for every pound of pressure being applied by the user, the ratio is a multiplier of pounds of pressure being exerted on the cartridge plunger. For example, the 12 to 1 Ratio Caulking Gun would provide 12 times the amount of each pound of pressure being applied.