RSVP Endurance Canning Funnel. Canning and preserving your summer vegetables and fruits can sometimes be difficult unless you have the right tools. This RSVP Canning Funnel has a wider rim to rest more securely on top of your jars. Helps with canning larger items like whole tomatoes and fruit halves/quarters. Made from stainless steel. The wide mouth measures approximately 6 in. and the base measures 2.5 in. Dishwasher safe.