Keep counters cleaner while canning. The Prepworks canning funnel fits wide and regular mouth canning jars and is designed with a double wall. The outside part of the funnel sits on the counter and the inside is shorter and sits over jar, helping to keep the canning area cleaner. It features headspace measurements for precise filling, and necessary air space for proper sealing of canned goods. The funnel measures 5.13-inch diameter by 3-1/4-inch high and is made with high heat polypropylene, preventing stains. It is dishwasher safe.