BENEFITS OF PEANUT BUTTER STIRRERS Prevent oily messes with a peanut butter stirrer from Lehman's. The oil in non-hydrogenated peanut butter naturally separates over time, but Grandpa Witmer's Old Fashioned Peanut Butter Mixer stirs the oil back into the peanut butter. Prevents an oily mess Easy to use with your favorite peanut butter Molded plastic knob Does not fit all peanut butter jars, please measure lid diameter before purchasing! Made in USA