this is a big wedge, we call it a Transition Mat, as typically it is used to move a large crawler crane up onto a Crane Mat platform. These wedges are 16″ at the heel, 2″ at the toe, 48″ wide and 14′ long. the center dap point is for a crane hook to move it into position. We try to make the center lift point the “tilt point” so it stays more or less flat when lifting.