{"product_id":"corundum-grinding-bits-ball-shape","title":"Proxxon Corundum Grinding Bits — Ball Shape, 3-Pack (No. 28782)","description":"\u003cp\u003e\u003cstrong\u003eBall-shaped corundum grinding bits for precision sharpening, deburring, and general-purpose grinding with Proxxon Micromot rotary tools.\u003c\/strong\u003e Made from high-quality base materials of consistent hardness, these bits deliver reliable performance across a wide range of hard materials. The ball profile is ideal for grinding concave surfaces, internal radii, and curved contours where flat or cylindrical bits can't conform to the workpiece geometry.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShape: ball\u003c\/li\u003e\n  \u003cli\u003eAbrasive: corundum (aluminum oxide)\u003c\/li\u003e\n  \u003cli\u003eShank diameter: 2.35mm (3\/32\") or 3.0mm (7\/64\") — accurately dimensioned for highest concentricity\u003c\/li\u003e\n  \u003cli\u003eQuantity: 3 pieces per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGrinding concave surfaces and internal radii\u003c\/li\u003e\n  \u003cli\u003eSharpening and deburring\u003c\/li\u003e\n  \u003cli\u003eCast iron and unhardened steels\u003c\/li\u003e\n  \u003cli\u003eNon-ferrous metals and hard metal alloys\u003c\/li\u003e\n  \u003cli\u003eWelded joints, rivets, and rust removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eProxxon No. 28782\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e\u003cstrong\u003eWorks Well With:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/9633228423392\"\u003eProfessional Rotary Tool IBS\/E\u003c\/a\u003e — primary compatible Micromot rotary tool\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/9633227276512\"\u003eProxxon AC Adapter NG 5\/E with Electronic Speed Control (No. 38704)\u003c\/a\u003e — variable speed bench power for controlled grinding\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/9633227243744\"\u003eProxxon AC Adapter NG 2\/S (No. 38706)\u003c\/a\u003e — basic bench power supply for Micromot tools\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/9633233207520\"\u003eCorundum Grinding Bits — Cylinder Shape, 3-Pack\u003c\/a\u003e — cylinder-shaped companion for straight surface grinding\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/9633233141984\"\u003eCorundum Grinding Bits — Wheel Shape, 3-Pack\u003c\/a\u003e — wheel-shaped companion for flat surface and edge grinding\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/9633233404128\"\u003eAluminum-Oxide Mounted Points — Round Shape, 5-Pack (No. 28772)\u003c\/a\u003e — larger round grinding points for similar curved surface work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eReturns can only be accepted for unused product in its original packaging. In addition to the returned item\/items, a copy of the original packing slip or invoice is required. If proper paperwork is missing, PROXXON Inc. will not issue a credit. For warranty claims please call 1-877-776-9966. Please see our return and refund policy \u003ca href=\"\/pages\/refund-policy\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cspan class=\"js-reveal\" data-reveal-target=\".js-reveal-container\"\u003eCalifornia Residents Prop 65 Information\u003c\/span\u003e\n\u003cdiv class=\"js-reveal-container\" data-reveal-mode=\"slide\"\u003e\n\u003cbr\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/1643\/2529\/files\/exclamation-mark-24144_large.png?v=1511288737\" alt=\"\" width=\"16\" height=\"14\" border=\"0\" align=\"left\" style=\"margin: 6px 6px 0 0;\"\u003eWARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to \u003ca href=\"https:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/div\u003e","brand":"Proxxon","offers":[{"title":"Default Title","offer_id":51229991338208,"sku":"28782","price":4.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/3943\/1904\/files\/28782.jpg?v=1774616167","url":"https:\/\/protoolhaus.com\/products\/corundum-grinding-bits-ball-shape","provider":"Pro Tool Haus","version":"1.0","type":"link"}