The New Jarvis Model HBD -- for the cutting out of hog bungs. •Reduced cross bung contamination due to a unique head design with a vacuum relief valve and internal wash. •High torque pneumatic motor for quick and clean hog bung removals. •Fast - a single operator can bung up to 1200 hogs / hour. •Increased yields - optimal blade size leaves more meat on the carcass, less on the intestine. •Increased yields - optimal blade size leaves more meat on the carcass, less on the intestine. •Higher grade casings - less casing damage than with a knife. •Hardened and ground solid stainless steel blades for long life.