I am a silversmith. I make and sell sterling silver thimbles and sewing tools. They come with a lifetime guarantee. I will repair or replace anything that happens to your thimble, forever. I can’t fix lost. Don’t lose your thimble.
Yubinuki is a Japanese name for these short band thimbles. They are not tapered. They are worn covering the base of the fingernail. Push from the side. These are solid sterling and can be worn on your thumb as well.