The Spalding 74560 The Beast 60 inch Portable Basketball Hoop System provides arena quality for your driveway. The 60 inch, 1/4" thick glass backboard provides 37% truer rebound than acrylic. The 55 gallon power move base makes transport safe and easy. The backboard is framed in heavy duty steel with aluminum trim. The four point Z-arm board mount provides increased stability and goal reinforcement. This Spalding basketball system includes a Pro-Image breakaway rim with heavy duty wrap around support and steel rams. The institutional style screw-jack lift provides infinite height adjustment from 7.5 feet to 10 feet. The two piece square angled pole has a 5 inch diameter. The four strut pole/base mount allows for superior system rigidity. The multi-wheel design with castors and the engaging handle make this portable basketball system easier to move. The gray inset cover acts as a handle for pre-play movement and a rebounder during play. Screw in water level gauge base caps keep the ballast secure. Ships via motor freight only to continental US addresses. Spalding "The Beast" 60 inch Portable Basketball Hoop System is currently on Manufacturer Back Order until the end of August 2010.