Hapstone R2 Opti Velocity Starter KitHighlights Revitalize your kitchen knives with the Hapstone R2 Opti Velocity Knife Sharpener Modular platform for easy customization and upgrades Rotating clamp module for optimal control and secure knife fixation Consistent bevel angles and adjustable sharpening angles for professional results Non slip rubber feet and non skid base for stability during sharpening Description Elevate your sharpening game with the Hapstone R2 Opti Velocity Knife