Large Hapstone Extra Coarse Stone Booster 8" x 2.4”

Hapstone USA Verified independent store

→

Hapstone Coarse Stone Booster Refresh and clean sharpening stones in the coarse range Purpose Clean and refresh The Coarse Stone Booster is designed to refresh and clean sharpening stones with grit ranging from 500/400 µm (approx. 30–50 grit) to 120/100 µm (approx. 120–150 grit). Compatibility Synthetic, CBN and diamond Light flattening and cleaning of synthetic stones (Boride, Naniwa, Shapton, Suehiro). Quick cleaning and light flattening of Hapstone Premium CBN and diamond stones. Works with PDT Premium and Expert series (metallic and resin bonds). How to use Simple preparation Soak the booster for 2–3 minutes before use. Run the sharpening stone over the surface of the booster using a variety of motions. Avoid excessive pressure to maintain the geometry of the stone. After use, rinse the booster thoroughly under running water to remove any abrasive residue. Specifications Size8×2.4×3/4" (200×60×20 mm) Grit rangeFor stones 500/400 µm to 120/100 µm .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 img{display:block;width:100%;height:auto;border:0;border-radius:24px} .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-media{max-width:520px;margin:0 auto} .r2-hero h1{ margin:0 0 12px; font-weight:700; letter-spacing:-0.02em; font-family:'Montserrat',sans-serif!important; color:inherit; } @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{ margin:0 0 8px; font-size:12px!important; line-height:1.2!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-2{grid-template-columns:repeat(2,1fr)} .r2-feature-card{ background:#f5f5f7; border-radius:24px; padding:24px; } .r2-feature-thumb{ width:100%; margin-bottom:14px; } .r2-feature-thumb img{ width:100%; border-radius:14px; } .r2-feature-card h2, .r2-split-copy h2{ margin:0 0 8px; padding-bottom:0!important; font-size:26px; line-height:1.15; font-weight:700; letter-spacing:-0.02em; } .r2-split-copy h2{ font-size:28px; } .r2-feature-card p, .r2-split-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 .9fr; gap:24px; align-items:center; background:#fbfbfd; border-radius:28px; padding:28px; } .r2-split-media{ max-width:420px; margin:0 auto; } /* 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:14px; } .r2-spec-grid{ display:grid; gap:18px; } .r2-spec-grid-2{ grid-template-columns:repeat(2,minmax(0,1fr)); } .r2-spec-item{ background:linear-gradient(180deg, rgba(255,255,255,.075), rgba(255,255,255,.055)); border-radius:20px; padding:20px; } .r2-spec-lines{ display:flex; flex-direction:column; gap:14px; } .r2-spec-lines div{ display:grid; grid-template-columns:150px minmax(0,1fr); gap:18px; } .r2-spec-lines span{ font-size:13px; color:rgba(255,255,255,.72); } .r2-spec-lines b{ font-size:14px; font-weight:600; color:#fff; text-align:right; word-break:break-word; } /* MOBILE */ @media(max-width:989px){ .r2-feature-grid-2, .r2-split, .r2-spec-grid-2{ grid-template-columns:1fr; } } @media(max-width:749px){ .r2-feature-card, .r2-split, .r2-dark-card{ padding:18px; } .r2-subtitle{ font-size:17px; } .r2-spec-lines div{ grid-template-columns:1fr; } .r2-spec-lines b{ text-align:left; } } Show more