Texas Knifemakers Supply Twisting Damascus Carbon Steel Steelhead Sushi Fillet Blade BLS-11 Made from 1075/15N20 Damascus Carbon steel with a twist pattern. Tang is welded from mild steel, great for file working 9-1/2" long with a 5" blade, 5/8" width and 1/8" thick. Pin holes are 5/32". Adds powerful elegance for high profile chefs cutting sashimi grade sushi. Not highly flexible.