1/10 Gallon Empty Plastic Cartridge With Fixed Nozzle Empty cartridge fits most standard 10oz / 1/10 gallon / 300ml cartridge guns. 2″ Diameter x 8.5″ Long. For use with standard self-leveling and gun-grade materials. High density polyethylene (HDPE) plastic. Piston #454-1 is sold separately. For high viscosity materials or if you need detachable nozzles see cartridge #383-229-689 Sold individually. 432 cartridges to a case.