This document discusses and reviews a set of canning tools. It summarizes that the jar lifter is very useful and worth the price alone for canning. Some of the other tools, like funnels and magnets, are made of plastic that melted under heat. The lid wrench and tongs may not be as necessary since jars don't need to be too tight and most kitchens already have tongs. Overall, the jar lifter is praised as very helpful for canning but some of the other plastic tools have durability issues.