The AccuSharp Precision Sharpening Kit allows you to manually sharpen your knives at a consistent exact and fixed angle. This kit provides precision sharpening designed to maintain accurate results for your knifes specific edge. The AccuSharp Precision Sharpening Kit is equipped with six angle and five stone options to keep your knifes edge razor sharp. Knife clamp has settings for 11 15 19 21 25 and 30 degree angles. Grits diamond coarse 320 coarse 120 medium 180 fine 280 and ceramic fine 1500.