High Quality Material | Aluminum alloy Ring Mandrel and Zinc alloy Ring Gauge, durable and long lasting.Measure Tool Size | The metal stick sizer is used for US sizes of 1 - 15 and 27 pieces ring gauge is for US sizes of 0 - 13 with half sizes (the negative number means half size), no quarter sizes.Useful Tools | The ring gauge can make you find a right size Ring easily. Never get a wrong size Ring. Ring mandrel stick can be used for making a good size Ring by yourself.Package includes | 1 piece ring mandrel stick, 1 set of ring sizer gauge (including 27 pieces ring sizers)Guaranty | We promise one month unconditional refund and replacement, and our customer service is always ready to help you in 24/7. High quality products and service is our priority.