Some 'stainless' is not really stainless and can rust. I use to have a mess with tangled safety pins left open until I found the pin covers. I love these things. They really work to make pinning easier. My DGD use to pin them all over her clothes making designs with them. They fit on curved or straight and make basting with safety pins so much better for your hands. And no tangled mess when left open in a container.
Here is a picture of them:
http://www.nancysnotions.com/product...grip+covers.do