[ Openner ] Jar opener for weak hands, V-shaped opening. The diameter of the bottle cap ranges from 0.6 to 6in. It can be unscrewed as large as wide mouth canning lids, as small as the cap of a soda bottle.[ Who To Use ] - Comes with 2 stainless steel screws, easy to install and use.The lid can be opened with single hand, it is perfect for weak hands, seniors with arthritis, elderly, chef, carpal tunnel, people working in the kitchen, limited use of hands, amputees etc.[Where Install] - This jar opener hides neatly out of sight under a cabinet, cupboard, counter, or shelf, taking no valuable storage space.The green triangular piece is double-sided tape and can be used to stick the can opener under the cabinet very well.[Wide Application] - under counter can opener will grab hold of any lid,open tough lids effortlessly, like a water bottle, a spice bottle, jam, molasses, marshmallow, canned fruit of all sizes，it is a very useful kitchen gadget.[ Satisfaction Guarantee ] - If you have the slightest problem with our product,please feel free to give us a message. We go out of our way to make sure every customer is happy and satisfied with our product and service.