Mercer 4 inch Deba Knife Asian Collection: Building on 30 years of innovation, Mercer is highly regarded and synonymous with quality: This Collection calls on the rich tradition of Japenese craftmanship to provide unsurpassed performance. With slip-resistant Santoprene handle. Razor sharp high carbon stain free German Steel. Single-blade edgge is taper ground with a fine stone finish. Used mostly to cut through fish headds and tails or other types of heavy use. Deba knives are heavy and mostly one sided bevel.