All Throttle Down Kustoms skids are CNC laser cut and CNC bent for a precise fit. Just like our Jeep frames. As we make Jeep frames, we know exactly where all the mounting holes should be, and exactly how the skid should fit the frame. We use rugged 1.5" diameter .120 DOM tubing for all skid frames. 3/16" steel plate is used for the skid. For all CJ's, TJ's and YJ's. We make them to fit both TDK frames and OEM frames. We also have drop options to accommodate drivetrain modifications.