Works great with my Yost Vise to hold fragile items or items I don't want vise marks on - I've always used shop towels for this purpose. They are magnetic, hold up well and work as expected. You have to be realistic about how you use them - they are designed for fragile items. So if you think you can turn a vise and then bang the workpiece with a full hammer, you're using the wrong one. . When used as intended, they are perfect and irreplaceable.