Lifetime warranty & lifetime money back guarantee. The ForJars funnel set includes: 1. Regular mouth size funnel 2. Wide mouth size funnel 3. Mesh strainer Features: - Made with stainless steel 304 - SS thickness: 0.8mm - Each funnel has a canning key. - Two side handles - A wide-edge platform allows food items to pass through easily. - Dishwasher-safe Headspace recommendations: -Jams & Jellies: 1/2 -Tomatoes, Fruits,and Pickles:When water bath canning these food items, plan on 3/4 -Low-Acid Foods: When pressure canning most low-acid foods (think red meats, seafood, poultry, milk, and all fresh vegetables except for most tomatoes here), leave 1 - Exceptions: As with any rule, there are always a few exceptions. When canning some vegetables and meats, 1 1/4 to 1 1/2 may be required.