Compatible US Size 1-14 This high-quality ring stretcher resizes ring bands from US size 1 to 14 or EUR size from 41 to 71. It can alter the ring measures more quickly compared to adjusting size by hand. Durable Nodular Iron The premium ring enlarger tool is made of durable nodular iron for sturdiness, and high-wearing resistance, making it an ideal enlargement tool. High-quality Splines & Handle The 4-spline mandrel is designed for precisely enlarging rings. And the nonskid handle improves efficiency to operate the tool. Hassle-free to Enlarge Rings Using this machine, you can increase the ring size effortlessly. During processing, check ring size frequently on your mandrel to keep from stretching your ring out too much. Complete Accessories There are a set of user-friendly accessories for your use. The ring measuring band is simple to measure. If there is surface damage to the ring, you can use silver cloth and bar on the spot without secondary processing. Extensive Application Our ring stretcher is widely applicable to processing coin-ring, solid gold, platinum band, or any other non-ferrous materials in jewelry shops, repair stores, jewelry processing plants, DIY, personal use, etc. Specifications Compatible Size: 1-14(US Size) / 41-71(EUR Size) Material: Nodular Iron Spline Material: 40 Chrome Item Dimensions: 4.92" x 4.92" x 11.02" /12.5 x 12.5 x 28 cm Item Weight: 7.72 lbs / 3.5 kg Package Content 1 x Coin Ring Stretcher 2 x Silver Cloths 1 x Silver Bar 1 x Agate Knife 1 x Ring Measuring Band 1 x Wrench