Spalding's "The Beast" Tempered Glass 60-in Portable Basketball System is sturdy and durable thanks to a 1/4-in tempered glass backboard with a heavy-duty steel frame trimmed in aluminum. The screwjack lift allows you to move the basket anywhere from 7.5 ft to 10 ft. This system also features a Pro-Image breakaway rim and a 50-gal capacity dual ballast base.