Pro Series Extension Set is a five-piece unit designed to hold the Pro Series Gong, Mark I or Mark II in the Taylor Targets "Pro Series Base" (sold separately) with the use of 2" x 4", purchase independently. The Extension Set allows the customer to raise the height of the target to your specific need. Using this method to hang the targets provides you a solid support for the target. The Extension set consist of two sets of Hanger Brackets, a stabilization bar, and a set of chain. Please view Warning and Safety Page for specific shooting information.