Best selling high school hurdle that sets the premier standard for elite programs. Aluminium square tube construction allows this rocker hurdle to stack like a college hurdle. Free sliding weights adjust quickly to official pullover resistance at all heights. The welded cross support design provides unrivaled durability. Aluminium powder coated gatetubes with a Lexan gateboard. Easy stack design for better stacking and portability. Fits traditional 42″ track lanes. Adjustable to five heights: 30″, 33″, 36″, 39″, and 42″.