This jar opener is designed with V-shaped to unscrew various sizes of caps. It can be adsorbed on the refrigerator surface or your home, garage, office, or as a travel accessory wherever there are a magnetic surface, taking no valuable storage space, making your life become simple. Firmly grab any lids of container of maraschino cherry, peanuts, marshmallow creme, molasses, jam, peanut butter, tomato ketchup, canned fruits, chilli sauce, as well as water bottle, soda bottle, soft drink bottle etc.