Ok this is a small little cleaning nugget! Its a very practical and small little scrubber that fits easily on a dish on your counter and unlike steel wool or anything it doesn't fall apart after use. The copper is a gentle metal that is tightly wound to stay in place. When they arrived to us we thought, "these are so small" but then happily surprised how practical they are in the kitchen! Fine copper-threads gently remove even persistent dirt – copper is a soft metal, which does not scratch. Ideal for high grade steel-articles, glass, china, ceramics, etc. Also removes layers of rust from blades, bikes, cars, etc. Do NOT use on teflon or similar surfaces. Use in wet condition only! Ecologically beneficial, 100% recyclable.