Now you can easily adjust your front arm with little effort and easy to install hardware. Composed of lightweight Aluminum and Moly-plating, this adjuster allows 1 ½” of heightening and lowering adjustment. Comes with 10-32 cap screws that can be easily placed into your tunnel. Available with a stainless steel adjuster bolt, Wahl Brothers has made one more way to make your testing easier and more efficient. Sold as a pair.