Bethesda Black Arkansas sharpening stones are used for sharpening knives on KME and Hapstone knife sharpeners

It creates no heat

R2 Standard features 2x asymmetric angled universal clamps that can be turned inward (for small knives) or outward (for long knives)

CS-HD 1000

Premium Stone Holder is made of metal

side straight clamps for hapstone r2 pair Bethesda Black Arkansas sharpening stonesStraight Side Clamps for Hapstone R2 and Hapstone Rotating Module utilizes flexible flat spring and spacer screw to secure knives of any shape including a full flat grind. Straight Clamps can be combined with Y Shaped Central Clamp and or Angled Universal Clamps. The kit includes 2 clamps. Straight Side Clamps are part of Hapstone R2 Classic kit.