The YoolaTube necklace is a simple yet powerful tutorial that can be implemented in many designs . A base is created and the silver, gold or colored YoolaTube is made from there. The preparation of thenecklace require the materials listed below along with good hands and sharp vision. You are using a crochet hook, but it’s more like spool knitting with an invisiblespool.Finished size: 0.8" x 0.8"( 22X22mm ).