{"product_id":"practice-copper-ring-single-piece","title":"Practice Copper Ring-Sold By The Piece","description":"\u003cp\u003eThe Practice Copper Ring is a single-piece copper ring designed for jewelers, engravers, and stonesetting students who need an affordable, realistic substrate for hands-on skill development. Copper's workability and surface characteristics make it a practical substitute for precious metal practice, allowing you to refine technique before committing to finished work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRing Dimension\u003c\/strong\u003e: 2.25mm Thick x 4.90mm Wide x 22mm ID\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSold individually — order exactly the quantity you need\u003c\/li\u003e\n\u003cli\u003eCopper construction offers realistic feel for engraving and stonesetting practice\u003c\/li\u003e\n\u003cli\u003eSuitable for bench training, classroom instruction, and technique development\u003c\/li\u003e\n\u003cli\u003ePractical substitute for precious metal practice work\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43579927363798,"sku":"126.540","price":3.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/practice-copper-ring-sold-by-the-piece-otto-frei.jpg?v=1719958356","url":"https:\/\/www.ottofrei.com\/it\/products\/practice-copper-ring-single-piece","provider":"Otto Frei","version":"1.0","type":"link"}