{"product_id":"ruby-bench-stone-4x1x3-8-boxed-medium-fine","title":"Ruby Bench Stone 4\" x 1\" x 3\/8\" Boxed","description":"\u003cp\u003eRuby bench stones are crafted from sintered crystals of synthetic ruby, making them exceptionally hard and highly resistant to wear. Their superior hardness allows them to sharpen and finish extremely hard metals — including carbide gravers — as well as non-metal materials such as glass, porcelain, and quartz. These stones maintain their shape reliably over extended use, making them a dependable choice for professional jewelers, metalsmiths, and engravers who demand consistent performance from their sharpening tools.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in two grits, this 4\" x 1\" x 3\/8\" bench stone comes boxed for convenient storage and protection.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from sintered synthetic ruby crystals for exceptional hardness\u003c\/li\u003e\n\u003cli\u003eMaintains shape well and resists wear over extended use\u003c\/li\u003e\n\u003cli\u003eSuitable for sharpening and finishing carbide gravers and other extremely hard metals\u003c\/li\u003e\n\u003cli\u003eAlso effective on non-metal materials including glass, porcelain, and quartz\u003c\/li\u003e\n\u003cli\u003eAvailable in Medium and Fine grits to suit different sharpening stages\u003c\/li\u003e\n\u003cli\u003eComes boxed for storage and protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e4\" x 1\" x 3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSintered synthetic ruby crystals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackaging\u003c\/th\u003e\n\u003ctd\u003eBoxed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eGrit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e110.423\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e110.424\u003c\/td\u003e\n\u003ctd\u003eFine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Medium","offer_id":43696707928278,"sku":"110.423","price":107.7,"currency_code":"USD","in_stock":true},{"title":"Fine","offer_id":43696707961046,"sku":"110.424","price":194.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/ruby-bench-stone-4-x-1-x-38-boxed-otto-frei-1.jpg?v=1719955445","url":"https:\/\/www.ottofrei.com\/products\/ruby-bench-stone-4x1x3-8-boxed-medium-fine","provider":"Otto Frei","version":"1.0","type":"link"}