Features: Made of high quality materials, high hardness, durable for long time use. Manual operate, convenient to use, can easily make your jewelry accessory or other items. Comes with 20 mandrels from 2.5mm to 12mm, meet your different needs. Equipped with mounting screws, easy to assemble. A professional ring tool for jewelry makers. Specification: Condition: 100% Brand New Mandrel Diameter: Approx. 2.5mm/0.1in, 3mm/0.1in, 3.5mm/0.1in, 4mm/0.2in, 4.5mm/0.2in, 5mm/0.2in, 5.5mm/0.2in, 6mm/0.2in, 6.5mm/0.3in, 7mm/0.3in, 7.5mm/0.3in, 8mm/0.3in, 8.5mm/0.3in, 9mm/0.4in, 9.5mm / 0.4in, 10mm / 0.4in, 10.5mm / 0.4in, 11mm / 0.4in, 11.5mm / 0.5in, 12mm / 0.5in Package list: 1* Base 1 * Rod 20 * Mandrel 1 * Thick Rod 1 * Handle 6* Screws