Easy to Use: Toggle ring and bar design, you just need to put the bar into the toggle and make the bar horizontal, it can be closely buckled. Size: Alloy Toggle Clasps: Oval: about 16mm wide, 21mm long, 3mm thick, Bar: about 9mm wide, 29mm long, hole: 2mm. DIY Craft: This toggle has a simple design to go with an piece of jewelry. It is the perfect size! Its not too big make your design unbalanced but still easy to for your hands to work. Design concept: Round shape keep the glossy alloy throughout your design by finishing it with a matching toggle clasp. Small toggle clasps are a great complement to chain and bracelet designs. A fashionable style you'll want to keep in your supply box. Wide Application: These are great for necklaces that close in the front and add a lovely embellishment. Convenient for those who may have difficulty putting on a necklace with a traditional lobster clasp.