With Dimensions Needle Felting you apply a design to felt or some other natural materials using unspun wool roving, and a special felting needle. Simply use a poking motion with the needle to interlock the fibers. Multi Needle- This needle felting tool, with an ergonomic handle, is easy to use. It features a locking, retractable safety tube and holds up to 7 needles for quicker felting effects. No thread or glue needed. Use it with the Dimensions Felt works Needle Felting Mat or a foam block, not included. Approximately 4" long. Detailed instructions included.