Cheap, flimsy, flimsy and made of tinfoil. I was going to throw them straight into the bin but then thought I could use them in the kitchen to seal coffee bags and such. If you want to use these clamps for light work or hobbies, save your money. Foldable paperclips, sold at office supply stores and used to secure papers and documents, are a better alternative and cost several times less, although they aren't very strong either. There has to be a better choice, maybe 1" wide x 4" long clamps - same style as these but bigger, thicker and stronger? Skip this product; buy something heavier and stronger.