Yaxell Tsuchimon 6-Piece Block Knife Set Yaxell Tsuchimon 6-piece Block Set - one each; 9" Bread Knife, 8" Chef's Knife, 7" Slicer, 5" Santoku, 3-1/4-inch Parer and 5 Position Bamboo Knife block Extremely sharp, extremely hard and extremely durable Rockwell hardness of 61 Sharpen with the Yaxell sharpener, a Japanese water stone or a diamond steel honed for sharpening Warranty: All Ginkgo products are fully guaranteed against defects in materials and workmanship