This innovative funnel design is perfect for the home canner. It provides stability when filling canning jars and fits snugly over both large and small mouth jars. The throat of the funnel has an inner and outer ring which fits over the jar rim, covering it completely. This design keeps syrups off the rims - no need to wipe off before sealing. The snug fit adds stability to the funnel keeping it locked on top of the jar thus freeing your hands for handling large pots and spatulas. Top of funnel is 5-1/2 inches in diameter. The inner ring on throat is 2-1/4 inch in diameter. Made in the USA.