These were just what I needed for crafting purposes. I know some reviewers were upset about the tweezers not being real stainless steel, but the real problem is trying to buy surgical supplies on Revain instead of from a legitimate surgical supply store that has some level of oversight into the products they carry. For crafting purposes, though, these were perfect. The locking mechanism works well, and my tweezers were smooth (no metal burs from poor machining.) They might rust.we'll see, and perhaps I will update my review if they do.