Spalding 66355 50 Inch ExactaHeight Portable Basketball System: * Spalding portable basketball system features a 50" Steel framed 1" x 1" clear acrylic backboard with square corners * Portable basketball hoop includes an authentic styled board pad * Heavy-duty solid steel Pro Slam breakaway rim with steel rams * ExactaHeight lift system adjusts rim height from 7.5" to 10" in 6" increments * Three piece, 3.5" diameter pole system * Front cover acts as built-in rebounder * 34 gallon base fills with sand or water for stability