4 3/4" Petty Stainless Steel Utility Knife / MercerBoasting three layers of laminated hard carbon, this petty knife collection differs from its counterpart by being versatile enough to chop vegetables similar to a chef knife and peel fruits the same as a paring knife. It is also rust resistant and incredibly durable to withstand daily use. The inner core of the lamination is made from super stainless steel with each of the two outer cores made of high carbon steel.