Suehiro Cerax Sharpening Stones Middle-range Suehiro aluminum oxide stones with vitrified binder for universal knife sharpening on Hapstone systems. Series Middle range Suehiro line Cerax is the middle range line of sharpening stones by Suehiro. Abrasive Aluminum oxide Cerax stones are made of aluminum oxide with a vitrified binder for stable sharpening performance. Steel range Universal sharpening Cerax stones can be used to sharpen knives of any steel, including high carbon, vanadium, and chromium steels. Use and care Soak before sharpening Cerax should be used with water as a lubricant. Soak Cerax in water for 5 minutes before use. Never store stones in water and never dry them near heat. Cerax stones are preliminarily lapped and do not require lapping after purchase. Cerax and New Cerax Premium stones for custom sets Suehiro sells two series with the Cerax name: Cerax and New Cerax. Suehiro continues selling both series independently. Unlike New Cerax, the Cerax series does not form an even progression, but offers a selection of premium stones for building a custom stone set. Specifications Size6 × 1" (150 × 25 mm) Stone thickness0.2”–0.24” (5–6 mm) AbrasiveAluminum Oxide BinderVitrified BlankAluminum blank Working withWater Country of originJapan Stone typeStone mounted on a 45° beveled blank .r2-case-apple{color:#191919;line-height:1.5} .r2-case-apple *,.r2-case-apple *::before,.r2-case-apple *::after{box-sizing:border-box;font-family:inherit!important} .r2-case-apple section{margin:0 0 20px} /* HERO */ .r2-hero{text-align:center;padding:12px 0 4px} .r2-hero-copy{max-width:760px;margin:0 auto 18px} .r2-hero h1{ margin:0 0 12px; font-weight:700; letter-spacing:-0.02em; font-family:'Montserrat',sans-serif!important; } @media(min-width:575px){ body .r2-case-apple .r2-hero .r2-hero-copy h1.hero-text{ font-size:36px!important; line-height:50px!important; } } .r2-subtitle{ max-width:720px; margin:0 auto; font-size:19px; line-height:1.4; color:#6e6e73; } /* LABELS */ .r2-case-apple .r2-feature-card p.r2-card-label, .r2-case-apple .r2-split-copy p.r2-card-label, .r2-case-apple .r2-dark-copy p.r2-card-label, .r2-case-apple .r2-showcase-copy p.r2-card-label{ margin:0 0 8px; font-size:12px!important; font-weight:700!important; letter-spacing:.06em!important; text-transform:uppercase; color:#6e6e73!important; font-family:'Montserrat',sans-serif!important; } .r2-case-apple .r2-card-label.light{color:rgba(255,255,255,.72)!important} /* FEATURES */ .r2-feature-grid{display:grid;gap:16px} .r2-feature-grid-3{grid-template-columns:repeat(3,1fr)} .r2-feature-grid-2{grid-template-columns:repeat(2,1fr)} .r2-feature-card{ background:#f5f5f7; border-radius:24px; padding:24px; } .r2-feature-card h2, .r2-split-copy h2, .r2-showcase-copy h2{ margin:0 0 8px; font-size:26px; font-weight:700; padding-bottom:0!important; } .r2-split-copy h2, .r2-showcase-copy h2{font-size:28px} .r2-feature-card p, .r2-split-copy p, .r2-showcase-copy p{ margin:0; font-size:16px; line-height:1.45; color:#373e48; } .r2-feature-card p + p, .r2-split-copy p + p{margin-top:10px} /* SPLIT */ .r2-split{ display:grid; grid-template-columns:1fr; gap:24px; align-items:center; background:#fbfbfd; border-radius:28px; padding:28px; } /* VIDEO */ .r2-showcase-video{ display:grid; grid-template-columns:.95fr 1.05fr; gap:24px; align-items:center; background:linear-gradient(180deg,#fbfbfd 0%,#f5f5f7 100%); border-radius:32px; padding:28px; } .r2-video-frame{ position:relative; padding-top:56.25%; border-radius:22px; overflow:hidden; } .r2-video-frame iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; } /* TECH */ .r2-dark-card{ background:#191919; color:#fff; border-radius:28px; padding:28px; } .r2-dark-card-soft{border-radius:32px} .r2-dark-copy{margin-bottom:18px} .r2-spec-grid{display:grid;gap:16px} .r2-spec-grid-2{grid-template-columns:repeat(2,1fr)} .r2-spec-item{ background:rgba(255,255,255,.06); border-radius:18px; padding:18px; } .r2-spec-lines{ display:flex; flex-direction:column; gap:8px; } .r2-spec-lines div{ display:flex; justify-content:space-between; align-items:flex-start; gap:12px; } .r2-spec-lines span{ font-size:13px; color:rgba(255,255,255,.75); } .r2-spec-lines b{ font-size:14px; color:#fff; text-align:right; } /* MOBILE */ @media(max-width:989px){ .r2-feature-grid-3, .r2-feature-grid-2, .r2-split, .r2-spec-grid-2, .r2-showcase-video{ grid-template-columns:1fr; } } @media(max-width:749px){ .r2-feature-card, .r2-split, .r2-dark-card, .r2-showcase-video{ padding:18px; } .r2-spec-lines div{ display:grid; grid-template-columns:1fr; gap:3px; } .r2-spec-lines b{ text-align:left; word-break:break-word; overflow-wrap:anywhere; } .r2-subtitle{font-size:17px} }