Woodworking Project Kit for Zhen Santoku Knife, Blade Blank, 4-13/16"L x 5/64"T Knife Blade Blank ONLY, handle must be made separately Customize your knife blade by choosing from a myriad of woods to make the handle yourself Crafted from 66 layers of Japanese Damascus steel VG  10 steel core with a Rockwell hardness of 60 - 62 Maintains an extremely sharp edge for a long period of time