EXTREMELY FAST! Fastest manual sharpener available for Eur/American and Asian style knives. Professional 3-Stage sharpener for super sharp edges on your 15 and 20 degree class knives For sharpening straight edge and serrated knives Chef’sChoice’s CrissCross® sharpening technology 100% diamond abrasives in all 3-Stages Precise bevel angle control creates ultra sharp 15 and 20 degree edges Separate sharpening and honing/polishing stages for a razor sharp, arch-shaped edge that is stronger and more durable “Soft Touch” handle for secure grip