The open star decorating Tip #8B is used for filling in stars and forming a variety of easy flowers; It is especially useful for making borders, such as shells, zigzags and ropes; Dishwasher safe tips are Tested for consistent performance in the Wilton Test kitchen; Use with decorating or parchment bags only; Before first and after each use, hand wash in warm, soapy water. Rinse and Allow to dry. Tips are also top-rack dishwasher safe