My ultrahuman ring fits really tight on the charger and needs to be pried off when removing. I designed this to sit between the charger and the ring and make it easier to pull off.

First put the puller on the charger, then put the ring on the charger. When you want to remove, just pull on the tool and the ring should come off easier.

This was made for a size 7 ring but can be sized up or down in the x and y directions.