Opinel Twelve Piece Knife Assortment 938 Review Posted: January 07, 2018 Under: Knives & Tools By CheapPie no Comments Knives have stainless blades and oak handles. Includes twelve 3 1/2″ to 4 1/2″ closed folding knives. Each knife has safety ring for locking the blade. Knives are shipped on a cardboard display board. Bulk packed.