Cryogenically Enhanced Stainless Steel Arctic Ulu Blade This blade has been cryogenically enhanced with liquid nitrogen at -305F to chemically remove austenite from the metal, improving its strength and edge-holding ability. Made with 440C stainless steel and polished to a satin finish Curved blade offers 6" of cutting length, 3-3/8" from center of blade to top, two holes for 3/16" diameter pins Use in a rocking motion in curved dish to easily chop, slice with corner to skin, drag to fillet Use bone, stone, or wood for a traditional handle, or acrylic for a modern look to your custom ulu!