{"product_id":"double-bar-diamond-national","title":"Double Bar Diamond Tooling Double Bar Diamond Tooling Compatible with National Flooring Grinders","description":"\u003ch6\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDouble Bar Diamond Tooling Compatible with National Flooring Grinders\u003c\/b\u003e\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp class=\"p2\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eDouble Bar Diamond Tooling Compatible with National Flooring Grinders\u003c\/b\u003e\u003c\/span\u003e is designed for professional concrete grinding, surface preparation, floor leveling, and surface refinement. Featuring two durable bar-shaped diamond segments, this metal bond tooling provides stable grinding performance, consistent contact with the concrete surface, and long service life.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eManufactured with premium industrial diamonds and high-quality metal powders, the double bar design provides a balanced combination of cutting efficiency and durability. Multiple grit and bond options are available to accommodate different grinding stages and concrete hardness levels.\u003c\/p\u003e\n\u003ch6\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eCompatible with National Flooring Grinders\u003c\/b\u003e\u003c\/span\u003e – Designed for use with compatible National Flooring grinding systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eDouble Bar Segment Design\u003c\/b\u003e\u003c\/span\u003e – Two bar-shaped diamond segments provide stable and consistent grinding performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eHigh Performance \u0026amp; Long Lifespan\u003c\/b\u003e\u003c\/span\u003e – Premium diamond and metal bond formulations provide efficient cutting and excellent durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eMultiple Grit Options\u003c\/b\u003e\u003c\/span\u003e – Available from aggressive initial grinding through finer surface refinement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eMultiple Bond Options\u003c\/b\u003e\u003c\/span\u003e – Choose the appropriate bond according to the hardness and abrasiveness of the concrete.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eProfessional Concrete Applications\u003c\/b\u003e\u003c\/span\u003e – Suitable for concrete grinding, floor leveling, surface preparation, and preparation before polishing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch6\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAvailable Grits: 16–200\u003c\/b\u003e\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp class=\"p2\"\u003eAvailable grit options include:\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003e16\/20, 16, 20, 30, 30\/40, 50, 60\/80, 60, 70, 80\/100, 80, 100, 100\/120, 120, 150, and 200 grit.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe grit number indicates the approximate coarseness of the diamond abrasive.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eLower grit numbers provide a coarser and more aggressive cut.\u003c\/b\u003e Grits such as 16, 20, and 30 are suitable for initial grinding and applications where faster material removal is required.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eHigher grit numbers produce finer scratches and a smoother surface.\u003c\/b\u003e Grits such as 80, 100, 150, and 200 are suitable for progressively refining the concrete surface and preparing it for subsequent polishing steps.\u003c\/p\u003e\n\u003ch6\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBond Options Based on Concrete Hardness\u003c\/b\u003e\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp class=\"p2\"\u003eSelecting the correct metal bond is essential for achieving efficient grinding, consistent diamond exposure, and long tooling life.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe bond is the metal matrix that holds the diamond particles in each segment. During grinding, the bond gradually wears away to expose fresh diamonds. Matching the bond to the hardness of the concrete helps maintain consistent cutting performance.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eAs a general rule:\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eHard Concrete → Softer Bond\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoft Concrete → Harder Bond\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eFor hard concrete, a softer bond wears more readily and helps expose fresh diamond particles. If the bond is too hard, the tooling may glaze over and lose cutting efficiency.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eFor soft or abrasive concrete, a harder bond helps control segment wear and extend tooling life. Using a bond that is too soft may result in excessive wear and shortened tool life.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0871\/0501\/2027\/files\/bond_psi_mohs_20260504.png?v=1777895477\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eACE Diamond Tooling offers a \u003cspan class=\"s1\"\u003e\u003cb\u003ecolor-coded bond system based on both concrete compressive strength (PSI) and the Mohs Concrete Hardness Scale\u003c\/b\u003e\u003c\/span\u003e, making it easier to select the appropriate bond for your floor conditions.\u003c\/p\u003e\n\u003ch6\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTested by Concrete Grinding Professionals\u003c\/b\u003e\u003c\/span\u003e\u003c\/h6\u003e\n\u003cp class=\"p2\"\u003eOur diamond tooling is tested and approved through our affiliate,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/customconcreteprepandpolish.com\/\" title=\"\" rel=\"noopener\" target=\"_blank\"\u003eCustom Concrete Prep \u0026amp; Polish\u003c\/a\u003e, whose team has more than 10 years of professional experience in concrete grinding, polishing, and surface preparation.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eReal-world testing helps us continuously evaluate grinding speed, segment wear, diamond exposure, and overall tooling performance before offering our products to contractors.\u003cspan class=\"s1\"\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6 class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan lang=\"EN-US\"\u003eExplore More\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp class=\"p1\"\u003e\u003cspan lang=\"EN-US\"\u003eBrowse our complete collection of\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/acediamondtooling.com\/collections\/werkmaster\" target=\"_blank\"\u003eTooling Collection Comapatible with National Flooring Grinders\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eto find more diamond tools including metal bond tooling, PCD coating removal tools, polishing pads, bush hammers, and other accessories for concrete floor preparation. To learn more about our manufacturing expertise, quality control process, and commitment to customer satisfaction, please visit our\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003ca href=\"https:\/\/acediamondtooling.com\/pages\/who-we-are\" title=\"\" rel=\"noopener\" target=\"_blank\"\u003eAbout Us\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003epage.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"ACE Diamond Tooling","offers":[{"title":"6","offer_id":49098799186235,"sku":"M80001ACE","price":16.9,"currency_code":"USD","in_stock":true},{"title":"16","offer_id":49098799382843,"sku":"M80001ACE","price":14.39,"currency_code":"USD","in_stock":true},{"title":"20","offer_id":49098799579451,"sku":"M80001ACE","price":14.39,"currency_code":"USD","in_stock":true},{"title":"16\/20","offer_id":49098799776059,"sku":"M80001ACE","price":14.39,"currency_code":"USD","in_stock":true},{"title":"30","offer_id":49098799972667,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"40","offer_id":49098800169275,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"30\/40","offer_id":49098800365883,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"50","offer_id":49098800562491,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"60","offer_id":49098800759099,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"70","offer_id":49098800955707,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"80","offer_id":49098801152315,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"60\/80","offer_id":49098801348923,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":49098801578299,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"120","offer_id":49098801774907,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"100\/120","offer_id":49098801971515,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true},{"title":"150","offer_id":49098802168123,"sku":"M80001ACE","price":13.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/0501\/2027\/files\/M80001ACE.jpg?v=1735179785","url":"https:\/\/acediamondtooling.com\/products\/double-bar-diamond-national","provider":"ACE Diamond Tooling","version":"1.0","type":"link"}