{"product_id":"hapstone-premium-cbn-4-inch-sharpening-stone","title":"Hapstone Premium CBN 4\"","description":"\u003cdiv class=\"r2-case-apple\"\u003e\n\u003c!-- HERO --\u003e\n\u003csection class=\"r2-hero\"\u003e\n\u003cdiv class=\"r2-hero-copy\"\u003e\n\u003ch1 class=\"hero-text\"\u003eHapstone Premium CBN Sharpening Stones 4\"\u003c\/h1\u003e\n\u003cp class=\"r2-subtitle\"\u003eDurable CBN stones with smooth cutting action for sharpening modern high-hardness steels and ceramic knives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"r2-hero-media\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- FEATURES --\u003e\n\u003csection class=\"r2-feature-grid r2-feature-grid-3\"\u003e\n\u003cdiv class=\"r2-feature-card\"\u003e\n\u003cp class=\"r2-card-label\"\u003eCutting\u003c\/p\u003e\n\u003ch2\u003eControlled sharpening\u003c\/h2\u003e\n\u003cp\u003eCubic boron nitride provides efficient steel removal while maintaining smooth and controlled cutting behavior during sharpening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"r2-feature-card\"\u003e\n\u003cp class=\"r2-card-label\"\u003eFeedback\u003c\/p\u003e\n\u003ch2\u003eComfortable feel\u003c\/h2\u003e\n\u003cp\u003eThe metal-organic bond combines the durability of metal bonds with a smoother sharpening feel and more predictable edge control.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"r2-feature-card\"\u003e\n\u003cp class=\"r2-card-label\"\u003eDurability\u003c\/p\u003e\n\u003ch2\u003eLong service life\u003c\/h2\u003e\n\u003cp\u003eHapstone Premium CBN stones are significantly more durable than traditional water stones and maintain stable performance over extended use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- SPLIT --\u003e\n\u003csection class=\"r2-split\"\u003e\n\u003cdiv class=\"r2-split-copy\"\u003e\n\u003cp class=\"r2-card-label\"\u003eApplication\u003c\/p\u003e\n\u003ch2\u003eFor hard steels and ceramics\u003c\/h2\u003e\n\u003cp\u003eHapstone Premium CBN stones are designed for sharpening modern steels up to 68+ HRC and are also suitable for ceramic knives.\u003c\/p\u003e\n\u003cp\u003eThe precision anodized aircraft-grade aluminum blank provides stable geometry and durability during sharpening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"r2-split-media\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- FEATURES 2 --\u003e\n\u003csection class=\"r2-feature-grid r2-feature-grid-2\"\u003e\n\u003cdiv class=\"r2-feature-card\"\u003e\n\u003cp class=\"r2-card-label\"\u003eMaintenance\u003c\/p\u003e\n\u003ch2\u003eNo soaking required\u003c\/h2\u003e\n\u003cp\u003eCBN stones do not require soaking or special preparation before use and can be cleaned with a Hapstone Dressing Stone. For the best sharpening experience, recommends using \u003ca href=\"https:\/\/www.hapstone-usa.com\/search?type=product\u0026amp;q=Hapstone+Magic+Oil\"\u003eHapstone Magic Oil\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"r2-feature-card\"\u003e\n\u003cp class=\"r2-card-label\"\u003eFinishing\u003c\/p\u003e\n\u003ch2\u003eClean edge finish\u003c\/h2\u003e\n\u003cp\u003eThe octahedral crystal structure of CBN helps minimize deep scratches while maintaining efficient sharpening performance. For finishing, \u003ca href=\"https:\/\/hapstone.eu\/collections\/stropping-compounds\/products\/hapstone-diamond-suspension-5-ml?_pos=1\u0026amp;_sid=550321962\u0026amp;_ss=r\"\u003eHapstone Diamond Suspension\u003c\/a\u003e is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- TECH --\u003e\n\u003csection class=\"r2-dark-card r2-dark-card-soft\"\u003e\n\u003cdiv class=\"r2-dark-copy\"\u003e\n\u003cp class=\"r2-card-label light\"\u003eSpecifications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"r2-spec-grid r2-spec-grid-2\"\u003e\n\u003cdiv class=\"r2-spec-item\"\u003e\n\u003cdiv class=\"r2-spec-lines\"\u003e\n\u003cdiv\u003e\n\u003cspan\u003eStone size\u003c\/span\u003e\u003cb\u003e4” × 1” × 1\/8” (100 × 24 × 8 mm)\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eAbrasive\u003c\/span\u003e\u003cb\u003eCBN (cubic boron nitride)\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eBinder\u003c\/span\u003e\u003cb\u003eHybrid\u003c\/b\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"r2-spec-item\"\u003e\n\u003cdiv class=\"r2-spec-lines\"\u003e\n\u003cdiv\u003e\n\u003cspan\u003eConcentration\u003c\/span\u003e\u003cb\u003e100%\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eWorking with\u003c\/span\u003e\u003cb\u003eOil, water, without lubricants\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eCountry of origin\u003c\/span\u003e\u003cb\u003eUkraine\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eStone type\u003c\/span\u003e\u003cb\u003eStone mounted on a 45° beveled blank\u003c\/b\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n.r2-case-apple{color:#191919;line-height:1.5}\n.r2-case-apple *,.r2-case-apple *::before,.r2-case-apple *::after{box-sizing:border-box;font-family:inherit!important}\n.r2-case-apple img{display:block;width:100%;height:auto;border:0;border-radius:24px}\n.r2-case-apple section{margin:0 0 20px}\n  .r2-feature-media {\n  margin: -8px -8px 16px;\n}\n\n.r2-feature-media img {\n  border-radius: 20px;\n}\n\/* HERO *\/\n.r2-hero{text-align:center;padding:12px 0 4px}\n.r2-hero-copy{max-width:760px;margin:0 auto 18px}\n.r2-hero-media{max-width:520px;margin:0 auto}\n.r2-hero h1{\n  margin:0 0 12px;\n  font-weight:700;\n  letter-spacing:-0.02em;\n  font-family:'Montserrat',sans-serif!important;\n}\n@media(min-width:575px){\n  body .r2-case-apple .r2-hero .r2-hero-copy h1.hero-text{\n    font-size:36px!important;\n    line-height:50px!important;\n  }\n}\n.r2-subtitle{\n  max-width:720px;\n  margin:0 auto;\n  font-size:19px;\n  line-height:1.4;\n  color:#6e6e73;\n}\n\n\/* LABELS *\/\n.r2-case-apple .r2-feature-card p.r2-card-label,\n.r2-case-apple .r2-split-copy p.r2-card-label,\n.r2-case-apple .r2-dark-copy p.r2-card-label{\n  margin:0 0 8px;\n  font-size:12px!important;\n  font-weight:700!important;\n  letter-spacing:.06em!important;\n  text-transform:uppercase;\n  color:#6e6e73!important;\n  font-family:'Montserrat',sans-serif!important;\n}\n.r2-card-label.light{color:rgba(255,255,255,.72)!important}\n\n\/* FEATURES *\/\n.r2-feature-grid{display:grid;gap:16px}\n.r2-feature-grid-3{grid-template-columns:repeat(3,1fr)}\n.r2-feature-grid-2{grid-template-columns:repeat(2,1fr)}\n.r2-feature-grid-1{grid-template-columns:1fr}\n\n.r2-feature-card{\n  background:#f5f5f7;\n  border-radius:24px;\n  padding:24px;\n}\n\n.r2-feature-card h2,\n.r2-split-copy h2{\n  margin:0 0 8px;\n  font-size:26px;\n  font-weight:700;\n  padding-bottom:0!important;\n}\n\n.r2-split-copy h2{font-size:28px}\n\n.r2-feature-card p,\n.r2-split-copy p{\n  margin:0;\n  font-size:16px;\n  line-height:1.45;\n  color:#373e48;\n}\n\n.r2-feature-card p + p,\n.r2-split-copy p + p{margin-top:10px}\n\n\/* SPLIT *\/\n.r2-split{\n  display:grid;\n  grid-template-columns:1fr .9fr;\n  gap:24px;\n  align-items:center;\n  background:#fbfbfd;\n  border-radius:28px;\n  padding:28px;\n}\n\n.r2-split-media{\n  max-width:420px;\n  margin:0 auto;\n}\n\n\/* TECH *\/\n.r2-dark-card{\n  background:#191919;\n  color:#fff;\n  border-radius:28px;\n  padding:28px;\n}\n\n.r2-dark-card-soft{border-radius:32px}\n\n.r2-dark-copy{margin-bottom:18px}\n\n.r2-spec-grid{\n  display:grid;\n  gap:16px;\n}\n\n.r2-spec-grid-2{\n  grid-template-columns:repeat(2,1fr);\n}\n\n.r2-spec-item{\n  background:rgba(255,255,255,.06);\n  border-radius:18px;\n  padding:18px;\n}\n\n.r2-spec-lines{\n  display:flex;\n  flex-direction:column;\n  gap:8px;\n}\n\n.r2-spec-lines div{\n  display:flex;\n  justify-content:space-between;\n  gap:7px;\n}\n\n.r2-spec-lines span{\n  color:rgba(255,255,255,.75);\n  font-size:13px;\n}\n\n.r2-spec-lines b{\n  font-size:14px;\n  text-align:right;\n}\n\n\/* MOBILE *\/\n@media(max-width:989px){\n  .r2-feature-grid-3,\n  .r2-feature-grid-2,\n  .r2-split,\n  .r2-spec-grid-2{\n    grid-template-columns:1fr;\n  }\n}\n\n@media(max-width:749px){\n\n  .r2-feature-card,\n  .r2-split,\n  .r2-dark-card{\n    padding:18px;\n  }\n\n  .r2-spec-lines div{\n    display:grid;\n    grid-template-columns:1fr;\n    gap:3px;\n    align-items:start;\n  }\n\n  .r2-spec-lines span{\n    font-size:12px;\n    line-height:1.35;\n    white-space:normal;\n  }\n\n  .r2-spec-lines b{\n    font-size:14px;\n    line-height:1.4;\n    text-align:left;\n    white-space:normal;\n    word-break:break-word;\n    overflow-wrap:anywhere;\n  }\n\n  .r2-subtitle{\n    font-size:17px;\n  }\n}\n\u003c\/style\u003e","brand":"Hapstone","offers":[{"title":"120 grit (125\/100 µm)","offer_id":54586860765368,"sku":"4-HAP-CBNPREMIUM-120","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"150 grit (100\/80 µm)","offer_id":54586860798136,"sku":"4-HAP-CBNPREMIUM-150","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"200 grit (80\/63 µm)","offer_id":54586860830904,"sku":"4-HAP-CBNPREMIUM-200","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"220 grit (63\/50 µm)","offer_id":54586860863672,"sku":"4-HAP-CBNPREMIUM-220","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"240 grit (50\/40 µm)","offer_id":54586860896440,"sku":"4-HAP-CBNPREMIUM-240","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"400 grit (40\/28 µm)","offer_id":54586860929208,"sku":"4-HAP-CBNPREMIUM-400","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"600 grit (28\/20 µm)","offer_id":54586860961976,"sku":"4-HAP-CBNPREMIUM-600","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"800 grit (20\/14 µm)","offer_id":54586860994744,"sku":"4-HAP-CBNPREMIUM-800","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"1000 grit (14\/10 µm)","offer_id":54586861027512,"sku":"4-HAP-CBNPREMIUM-1000","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"2000 grit (7\/5 µm)","offer_id":54586861060280,"sku":"4-HAP-CBNPREMIUM-2000","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"4000 grit (5\/3 µm)","offer_id":54586861093048,"sku":"4-HAP-CBNPREMIUM-4000","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"5000 grit (3\/2 µm)","offer_id":54586861125816,"sku":"4-HAP-CBNPREMIUM-5000","price":74.1,"currency_code":"EUR","in_stock":true},{"title":"8000 grit (2\/1 µm)","offer_id":54586861158584,"sku":"4-HAP-CBNPREMIUM-8000","price":74.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/5511\/7752\/files\/120.jpg?v=1793311426","url":"https:\/\/hapstone.eu\/en-ww\/products\/hapstone-premium-cbn-4-inch-sharpening-stone","provider":"Hapstone EU","version":"1.0","type":"link"}