This 4 X 4 knife design is a very usable with its 4 inch blade and 4 inch handle and well suited to the tasks it was designed for. The 4x4 is not only the measurements but it was designed with the getting into and out of a work vehicle multiple times a daay with it not being in the way or generally catching on things during the process so there will always be a knife on the belt and ready for use.