We had this canning funnel designed to our specifications, so naturally we think it is the best one available.
Ideal for making preserves because it lets you pour directly from large pots into jars without spilling, ensuring that you get a perfect seal between jar and lid.
Made from polished, food-grade 18/8 stainless steel. Measures 5 1/2" in diameter and fits jars with openings of 2 5/16" or larger.
Comes with a smaller funnel that screws to the bottom and lets you fill bottles with openings as small as 1".