Hapstone RS ULTRA Knife Sharpener
- #3 Best Seller in 📘Hapstone RS
- #4 Best Seller in ⚔️Hapstone Sharpeners
SKU: HAPSTONE-RS-ULTRA
AVAILABILITY: In stock (22 items)
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Hapstone RS ULTRA includes the latest upgrades for RS platform, such as Universal Clamps, Precise Angle Adjuster and Advanced Stone Holder. Hapstone RS ULTRA is packed in soft case.
- 🏗️Hapstone RS Platform
- ⚙️Hapstone RS Rotating Clamp Module
- ↕️Precise Angle Adjuster for Hapstone RS
- ↔️Advanced Stone Holder with Linear Bearing for Hapstone RS
- 🔪2x RS Whole Milled Angled Clamps
- 🔪2x RS Universal Angled Clamps
- 🛑Spring-Assisted Stopper
- 📐Digital Angle Gauge (battery not included)
- 🪛3mm Ball-End Hex Screwdriver
- 🧰Сase for Hapstone RS
- 🔩Spare Clamp Screws
- 📈Waterproof Grand Logarithmic Grit Chart
- 🖊️King Size Sharpie Marker
- ⚖️Weight: 5.5 lbs (2.5 kg)
- 📏Dimensions: 11"х5.5"х7.4" (280х143х188mm)
- 🔪Blade length: 1.6" to 9.2" (40 to 230mm)
- 🗜️Maximum blade thickness: 0.25" (6mm)
- 📐Sharpening angle range: 12° to 30° (🔬Confirmed: 10° to 35°)
Introducing the Hapstone RS, a new knife sharpening system born from the expertise of the Ukrainian team at Hapstone. Astonishing efficiency and user-friendly operation characterize this tool. For those seeking razor-sharp blades in the kitchen, repair shop, or for any hobbies, Hapstone RS stands as the ideal option.
Five years of diligent experience were dedicated to the conceptualization and design of this top-tier sharpening system, leading to the conclusion that Hapstone RS is the finest knife sharpener on the market due to its unique design. The versatility of this sharpening system accommodates a broad spectrum of knife sizes and thicknesses. From a diminutive paring knife to a substantial chef's knife, this system manages all with ease. Supporting a range from 40 to 230mm in length and up to 6mm in thickness, the sharpening system capably sharpens all knife types, from slender fillet knives to hefty cleavers. Moreover, the innovative design ensures the secure placement of the knife during the sharpening process, guaranteeing uniform and consistent sharpening every time.
The system features an innovative magnetic quick release 360° guide rod, which offers complete sharpening freedom. Developed with a focus on durability and performance, the guide rod uses high-grade materials for longevity. Its magnetic attachment system provides a steady and stable connection, and its compact, lightweight design facilitates easy use.
When bringing the Hapstone RS to life, the utmost attention was paid to details and materials to guarantee optimal performance and durability. Whole milled angled clamps consist of aircraft-grade aluminum, while high-quality stainless steel forms the guides, ensuring durability and operational stability.
The stone holder, screws, clamps, and the frame of the rotating module consist of solid aircraft aluminum. A robust 8mm steel base with silicone feet ensures absolute stability for the sharpener.
A 5-year warranty accompanies the Hapstone RS knife sharpeners, instilling confidence in the reliability of the devices and assuring manufacturer support for the entire period of use.
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Venev Ursa
- 💎Ursa Diamond 80 + 150
- 💎Ursa Diamond 240 + 400
- 💎Ursa Diamond 800 + 1200
- Inexpensive but powerful diamond set for all users. 6" resin-bonded dual-sided narrow diamonds. Six grits 80 to F1200. For all steels. To be used with water.
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Venev Centaur
- 💎Centaur Diamond 80 + 150
- 💎Centaur Diamond 240 + 400
- 💎Centaur Diamond 800 + 1200
- Mid range diamond set for all users. 6" resin-bonded dual-sided diamonds. Six grits 80 to F1200. For all steels. To be used with water.
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Boride T2
- 🪨Boride T2 150
- 🪨Boride T2 220
- 🪨Boride T2 400
- 🪨Boride T2 800
- 🪨Boride T2 1200
- Hard bonding aluminum oxide stone set for experienced users. For soft and medium-hard steels. Can be used with water or oil.










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