"SPECIAL KNIFE CLAMP/ANGLE FOR SIX PRECISE SHARPENING ANGLES AND SECURE KNIFE CLAMPING TO INSURE THE MOST EFFICIENT BLADE-TO-STONE CONTACT. INCLUDES EXTRA COARSE, COARSE, MEDIUM AND FINE HONING STONES, SPECIALITY SERRATED KNIFE BLADE SHARPENING STONE, HONING OIL AND CUSTOM CASE."