A good seal is the key to successful home canning. Now you can know that your bands are secured properly before processing with this new tool. It is designed to apply the correct force every time. Put your band on the jar, place the bottom of this ring tool on top of the band, push down handle and turn to the left. 9-3/4" long with handle x 3-3/4" wide. Fits both regular and widemouth jars.

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