{"product_id":"gold-fluted-4-5mm-hollow-cup","title":"Gold Fluted 4.5mm Hollow Cup","description":"\u003cp\u003eThis 14K yellow gold fluted hollow cup measures 4.5mm and features a pre-drilled pin hole, ready to be drilled to fit your specific pin stem diameter. Designed for professional jewelers working with pin-back findings, this hollow cup provides a clean, finished base with fluted detailing suited for brooches, lapel pins, and similar wearable components.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFluted exterior detailing for decorative finish\u003c\/li\u003e\n\u003cli\u003eHollow cup construction\u003c\/li\u003e\n\u003cli\u003ePre-drilled pin hole — drill to fit your pin stem\u003c\/li\u003e\n\u003cli\u003e14K yellow gold\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMetal\u003c\/th\u003e\n\u003ctd\u003e14K Yellow Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCup Diameter\u003c\/th\u003e\n\u003ctd\u003e4.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eHollow cup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePin Hole\u003c\/th\u003e\n\u003ctd\u003ePre-drilled; drill to fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eMetal Type\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e90-911\u003c\/td\u003e\n\u003ctd\u003e14K Yellow Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"14K Yellow","offer_id":47551615893718,"sku":"90-911","price":8.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14ky-fluted-4-5mm-hollow-cup-otto-frei.jpg?v=1719954454","url":"https:\/\/www.ottofrei.com\/products\/gold-fluted-4-5mm-hollow-cup","provider":"Otto Frei","version":"1.0","type":"link"}