Our ultrasonic baskets simply cannot scratch precious jewelry! Made of 100% plastic with fine nylon mesh, this 4" x 2-3/4" x 2" has a 6-1/4" handle with two 1-1/4" tabs to fit onto the edge of virtually any ultrasonic unit. You can even put several across larger units. Baskets nest for compact storage or use the hole in the handle for hanging when not in use.