{"product_id":"starcke-blue-zirconium-hardwood-floor-edger-discs","title":"Starcke Blue Zirconium Edger Discs – 7” x 7\/8” Hole | Heavy-Duty Zirconium (25\/B","description":"\u003ch2 data-start=\"143\" data-end=\"199\"\u003e\u003cstrong data-start=\"146\" data-end=\"199\"\u003eStarcke Blue Zirconium Hardwood Floor Edger Discs\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"201\" data-end=\"312\"\u003e\u003cstrong data-start=\"201\" data-end=\"312\"\u003eThese are the edger discs we reach for when scratch consistency matters and mistakes can’t be hidden later.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"314\" data-end=\"678\"\u003eStarcke Blue Zirconium edger discs are \u003cstrong data-start=\"353\" data-end=\"404\"\u003eprofessional-grade hardwood floor sanding discs\u003c\/strong\u003e engineered for \u003cstrong data-start=\"420\" data-end=\"495\"\u003eaggressive cutting, predictable scratch patterns, and long service life\u003c\/strong\u003e. The zirconium grain cuts fast while staying cooler and more controlled than standard aluminum oxide, reducing stray scratches that can telegraph through stain or sensitive finishes.\u003c\/p\u003e\n\u003cp data-start=\"680\" data-end=\"1022\"\u003eThe \u003cstrong data-start=\"684\" data-end=\"711\"\u003eheavy, flexible backing\u003c\/strong\u003e is the difference-maker. It resists tearing and edge blowout while still flexing enough to stay stable under pressure—especially important during first-cut edging and edge blending. Compared to aluminum oxide discs, Blue Zirconium lasts longer and behaves more consistently, even on hard or reclaimed flooring.\u003c\/p\u003e\n\u003cp data-start=\"1024\" data-end=\"1089\"\u003eUse these when you need \u003cstrong data-start=\"1048\" data-end=\"1073\"\u003econtrolled aggression\u003c\/strong\u003e, not guesswork.\u003c\/p\u003e\n\u003cp data-start=\"1091\" data-end=\"1141\"\u003eSame-day shipping • Local pickup in Saint Paul, MN\u003c\/p\u003e\n\u003chr data-start=\"1143\" data-end=\"1146\"\u003e\n\u003ch3 data-start=\"1148\" data-end=\"1187\"\u003e\u003cstrong data-start=\"1152\" data-end=\"1187\"\u003eWhy contractors use these discs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1188\" data-end=\"1473\"\u003e\n\u003cli data-start=\"1188\" data-end=\"1242\"\u003e\n\u003cp data-start=\"1190\" data-end=\"1242\"\u003eZirconium grain for fast, cool, aggressive cutting\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1243\" data-end=\"1307\"\u003e\n\u003cp data-start=\"1245\" data-end=\"1307\"\u003eExtremely consistent scratch pattern — critical before stain\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1308\" data-end=\"1362\"\u003e\n\u003cp data-start=\"1310\" data-end=\"1362\"\u003eHeavy flexible backing resists tearing and blowout\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1363\" data-end=\"1413\"\u003e\n\u003cp data-start=\"1365\" data-end=\"1413\"\u003eLonger life than standard aluminum oxide discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1414\" data-end=\"1473\"\u003e\n\u003cp data-start=\"1416\" data-end=\"1473\"\u003eReliable performance on hard woods and reclaimed floors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1475\" data-end=\"1478\"\u003e\n\u003ch3 data-start=\"1480\" data-end=\"1501\"\u003e\u003cstrong data-start=\"1484\" data-end=\"1501\"\u003eBest used for\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1502\" data-end=\"1679\"\u003e\n\u003cli data-start=\"1502\" data-end=\"1540\"\u003e\n\u003cp data-start=\"1504\" data-end=\"1540\"\u003eFirst-cut edging and heavy removal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1541\" data-end=\"1573\"\u003e\n\u003cp data-start=\"1543\" data-end=\"1573\"\u003eEdge blending into the field\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1574\" data-end=\"1626\"\u003e\n\u003cp data-start=\"1576\" data-end=\"1626\"\u003eJobs where scratch consistency is non-negotiable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1627\" data-end=\"1679\"\u003e\n\u003cp data-start=\"1629\" data-end=\"1679\"\u003eHarder species, reclaimed, or problematic floors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1681\" data-end=\"1684\"\u003e\n\u003ch3 data-start=\"1686\" data-end=\"1709\"\u003e\u003cstrong data-start=\"1690\" data-end=\"1709\"\u003eWhen NOT to use\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1710\" data-end=\"1851\"\u003e\n\u003cli data-start=\"1710\" data-end=\"1747\"\u003e\n\u003cp data-start=\"1712\" data-end=\"1747\"\u003eFinal finish sanding or screening\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1748\" data-end=\"1781\"\u003e\n\u003cp data-start=\"1750\" data-end=\"1781\"\u003eUltra-fine scratch refinement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1782\" data-end=\"1851\"\u003e\n\u003cp data-start=\"1784\" data-end=\"1851\"\u003eSituations requiring open-coat or mesh abrasives for dust loading\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1853\" data-end=\"1856\"\u003e\n\u003ch3 data-start=\"1858\" data-end=\"1886\"\u003e\u003cstrong data-start=\"1862\" data-end=\"1886\"\u003eGrit Selection Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1887\" data-end=\"2111\"\u003e\n\u003cli data-start=\"1887\" data-end=\"1947\"\u003e\n\u003cp data-start=\"1889\" data-end=\"1947\"\u003e\u003cstrong data-start=\"1889\" data-end=\"1904\"\u003e24–36 grit:\u003c\/strong\u003e Heavy edge work, paint or finish removal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1948\" data-end=\"2007\"\u003e\n\u003cp data-start=\"1950\" data-end=\"2007\"\u003e\u003cstrong data-start=\"1950\" data-end=\"1965\"\u003e40–60 grit:\u003c\/strong\u003e Intermediate leveling and edge blending\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2008\" data-end=\"2048\"\u003e\n\u003cp data-start=\"2010\" data-end=\"2048\"\u003e\u003cstrong data-start=\"2010\" data-end=\"2022\"\u003e80 grit:\u003c\/strong\u003e Pre-finish edge sanding\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2049\" data-end=\"2111\"\u003e\n\u003cp data-start=\"2051\" data-end=\"2111\"\u003e\u003cstrong data-start=\"2051\" data-end=\"2068\"\u003e100–120 grit:\u003c\/strong\u003e Final edging before screening or coating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2113\" data-end=\"2116\"\u003e\n\u003ch3 data-start=\"2118\" data-end=\"2150\"\u003e\u003cstrong data-start=\"2122\" data-end=\"2150\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2151\" data-end=\"2445\"\u003e\n\u003cli data-start=\"2151\" data-end=\"2173\"\u003e\n\u003cp data-start=\"2153\" data-end=\"2173\"\u003e\u003cstrong data-start=\"2153\" data-end=\"2163\"\u003eBrand:\u003c\/strong\u003e Starcke\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2174\" data-end=\"2228\"\u003e\n\u003cp data-start=\"2176\" data-end=\"2228\"\u003e\u003cstrong data-start=\"2176\" data-end=\"2189\"\u003eCategory:\u003c\/strong\u003e Zirconium hardwood floor edger discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2229\" data-end=\"2253\"\u003e\n\u003cp data-start=\"2231\" data-end=\"2253\"\u003e\u003cstrong data-start=\"2231\" data-end=\"2241\"\u003eGrain:\u003c\/strong\u003e Zirconium\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2254\" data-end=\"2298\"\u003e\n\u003cp data-start=\"2256\" data-end=\"2298\"\u003e\u003cstrong data-start=\"2256\" data-end=\"2268\"\u003eBacking:\u003c\/strong\u003e Heavy-duty flexible backing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2299\" data-end=\"2320\"\u003e\n\u003cp data-start=\"2301\" data-end=\"2320\"\u003e\u003cstrong data-start=\"2301\" data-end=\"2315\"\u003eDisc Size:\u003c\/strong\u003e 7″\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2321\" data-end=\"2346\"\u003e\n\u003cp data-start=\"2323\" data-end=\"2346\"\u003e\u003cstrong data-start=\"2323\" data-end=\"2339\"\u003eCenter Hole:\u003c\/strong\u003e 7\/8″\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2347\" data-end=\"2445\"\u003e\n\u003cp data-start=\"2349\" data-end=\"2445\"\u003e\u003cstrong data-start=\"2349\" data-end=\"2367\"\u003eCompatibility:\u003c\/strong\u003e Fits Clarke, American Sanders, Silver-Line, Super 7, B2, and similar edgers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2447\" data-end=\"2450\"\u003e\n\u003ch3 data-start=\"2452\" data-end=\"2477\"\u003e\u003cstrong data-start=\"2456\" data-end=\"2477\"\u003eApplication Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2478\" data-end=\"2693\"\u003e\n\u003cli data-start=\"2478\" data-end=\"2542\"\u003e\n\u003cp data-start=\"2480\" data-end=\"2542\"\u003eStart \u003cstrong data-start=\"2486\" data-end=\"2505\"\u003eone grit higher\u003c\/strong\u003e than you would with aluminum oxide\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2543\" data-end=\"2593\"\u003e\n\u003cp data-start=\"2545\" data-end=\"2593\"\u003eMaintain steady pressure to avoid edge gouging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2594\" data-end=\"2650\"\u003e\n\u003cp data-start=\"2596\" data-end=\"2650\"\u003eBlend edges carefully into the field sanding pattern\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2651\" data-end=\"2693\"\u003e\n\u003cp data-start=\"2653\" data-end=\"2693\"\u003eVacuum thoroughly between grit changes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2695\" data-end=\"2698\"\u003e\n\u003ch3 data-start=\"2700\" data-end=\"2722\"\u003e\u003cstrong data-start=\"2704\" data-end=\"2722\"\u003eDustin’s Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2723\" data-end=\"2962\"\u003eThis is my go-to edger disc because the scratch pattern is predictable and the backing doesn’t fail under pressure. I’ll even use these on stain jobs where mistakes are unforgiving. They cut hard, but they behave—and that’s the difference.\u003c\/p\u003e\n\u003chr data-start=\"2964\" data-end=\"2967\"\u003e\n\u003ch3 data-start=\"2969\" data-end=\"2998\"\u003e\u003cstrong data-start=\"2973\" data-end=\"2998\"\u003eRelated \u0026amp; Recommended\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2999\" data-end=\"3171\"\u003e\n\u003cli data-start=\"2999\" data-end=\"3055\"\u003e\n\u003cp data-start=\"3001\" data-end=\"3055\"\u003e\u003cstrong data-start=\"3001\" data-end=\"3024\"\u003eMatching Abrasives:\u003c\/strong\u003e Starcke Blue Zirconium belts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3056\" data-end=\"3110\"\u003e\n\u003cp data-start=\"3058\" data-end=\"3110\"\u003e\u003cstrong data-start=\"3058\" data-end=\"3074\"\u003eFinish Prep:\u003c\/strong\u003e Fine aluminum oxide or mesh discs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3111\" data-end=\"3171\"\u003e\n\u003cp data-start=\"3113\" data-end=\"3171\"\u003e\u003cstrong data-start=\"3113\" data-end=\"3135\"\u003eFinishing Systems:\u003c\/strong\u003e Berger-Seidle waterborne finishes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ground Floor Supply","offers":[{"title":"120 Grit","offer_id":47217164517568,"sku":null,"price":20.94,"currency_code":"USD","in_stock":true},{"title":"100 Grit","offer_id":47217164550336,"sku":null,"price":20.94,"currency_code":"USD","in_stock":true},{"title":"80 Grit","offer_id":47217164583104,"sku":null,"price":24.81,"currency_code":"USD","in_stock":true},{"title":"60 Grit","offer_id":47217164615872,"sku":null,"price":26.94,"currency_code":"USD","in_stock":true},{"title":"40 Grit","offer_id":47217164648640,"sku":null,"price":32.94,"currency_code":"USD","in_stock":true},{"title":"36 Grit","offer_id":47217164681408,"sku":null,"price":37.2,"currency_code":"USD","in_stock":true},{"title":"24 Grit","offer_id":47217164714176,"sku":null,"price":42.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/8913\/7600\/files\/IMG-9563.png?v=1767727578","url":"https:\/\/www.groundfloorsupply.com\/products\/starcke-blue-zirconium-hardwood-floor-edger-discs","provider":"Ground Floor Supply","version":"1.0","type":"link"}