Hard work and dedication pay off on the court and in the design and manufacture of quality equipment as well. Bison’s 4" square QwikChange poles have 75% more steel than common round poles. One of these systems is going to look great in your driveway for years to come! It’s going to grow with your kids, too. Height adjusts from 7 1/2' to 10' in 6" increments. The height adjustment mechanism has over ten times the pivot contact area of commonly compared round pole systems, so go ahead and let them slam dunk!