This is just a plastic sleeve that I have heard called a nobby. It makes setting the dryer a lot easier.
Sometimes you don't realize how much strain you are putting on your joints until you make it easier. These can be used on any knob or dial. They are a little stretchy but you might need help to put them on the knob the first time.
Turning keys in a regular lock can be tough when your hands are sore and weak. Opening my front door has always been a problem for me. I used to use the metal split ring on my keyring but it is MUCH easier using this keyturner. I even bought another to use for the washroom door at my office.
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