Use these diamond art trays to sort, line-up, pick-up and apply diamond art gems while you are working on a project. This set includes 10 trays so you can you can organize and work on multiple diamond art projects at once.Details:Clear and blue4" x 2.7" x 0.7" (10.1cm x 6.8cm x 1.7cm) each10 piecesHigh-impact polystyrene and plastic