The traditional tail vise uses one large screw, either wooden or metal. It is made in the form of a frame, with the back part of the frame fitting under the bench, and the movement of that frame located and restrained by a complex system of sliding tongues and grooves, and runners, such that smooth left and right movements of the frame are possible, but forward and backward movements, or rotative movements of the frame are impossible. The jaw has a face that contacts the bench top, and it has one or more dog holes on the top—often 3 to 4, each spaced 5 inches apart—that are in line with the dog holes located on the front face (apron) of the bench—numerous holes, each also spaced 5 inches apart. This is the least expensive option for a tail vise, but it is by far the most complex to design, construct and maintain. Tage Frid and Frank Klausz popularized this type of tail vise in North America, although its origin dates back to northern Europe (most probably Germany) in the 18th century.