The US finger gauge measuring belt measures from 1-17 gauge, specific to half size; Made of plastic, with black and white colors. With aluminium ring mandrel sizer and alloy calibration rings. This set can measure 4 sizes: US sizes of 1-15 gauge, mm daimeter(m/m∮), france size and EU circumference of 41-76 (No/CU). Here comes with 2pcs US finger gauge measuring belt (black & white), 1pc wood ring mandrel stick, 1pc jewelry hammer, 1pc aluminium ring size sticks and 1set alloy US calibration ring sizers. shaping stick and a metal jewelry hammer with rubber handle and detachable plastic ends. Great for shaping and repairing rings or wires. With this ring sizer measuring set, you can easily get accurate ring sizes, fix misshaped rings, wires, or chains, and even make your own jewelry. It's a perfect kit for ring making professional and beginner., Manufacturer: PokFhgur