Chop's Power Injector System 4" 12 Gauge Large Bore Needles 4 Pack 4 Pack of 12 Gauge needles 4 inches long for Chop's Power Injector System! Great for Injecting spices into your favorite meats! Get pro results everytime! Upgrade from the stock 14 gauge needles! These are MONSTER 4" 12 gauge needles great for whole hog!