The 6-in-1 Smart Funnel from Masontops is the best canning funnel on the market. Period. Designed to fit securely atop both regular- and wide-mouth Mason jars, this funnel can be operated hands-free. The clear neck of the funnel includes markings to gauge headspace, and common measurement conversions have been imprinted on the upper rim. A strainer insert and bottle-filler spout come included with this item, and it is equipped with a disc removal hook to open sealed Mason jars. The outer collar is taller than the inner neck of the funnel, preventing countertop contamination. This item is BPA-free, dishwasher-safe and can withstand boiling water.