This kit is designed and produced by Marj Bates. She's a glass artist that has been making knobs for 8+ years and has working with glass for a number more! She has teamed up with Zoozii's to make available an exclusive Kit that contins three threaded mandrels. On these mandrels you place on of 12 inserts. You make the knob right on the insert. Once it is out of the kiln you are ready to attach it to any piece of furniture, or drawer, or... with one of the included screws. The kit contains: Three Threaded Mandrels 12 Steel Inserts 12 Screws to fit Inserts Basic instructions on how to use the kit The Knob Press by Zoozii's is available to assist you in making consistant well shaped knobs! With this kit and that press you are on your way to redoing your whole kitchen if you want to!! If you are interested in both the Kit shown here and the Knob Press, you will find them packaged together at a reduced rate in the New Items Section of the store.