Abstract: Cutlery apparatus with readily interchangeable cutting tools such as knives, the cutting tools being either double ended or a plurality of single ended tools pivotally mounted in a handle, either directly between the handle sides or on a generally U-shaped tool holding member which is in turn pivotally movable in and out of a slotted handle, the apparatus being further provided with lock arm means also pivotally mounted on the handle, forming a part of the handle when closed and retaining the tool rigidly in the handle without use of spring means when the tool is locked in the handle in a position of use. The apparatus which in certain embodiments is of a type commonly called swap blade knives, is readily disassembleable for tool interchange or cleaning. Double ended knives embodying the invention have the strength of a full tang knife with the versatility of a multi-bladed folding knife.