Spalding 77351 Portable Basketball System - 44" Polycarbonate Backboard Portable basketball system with 44-inch polycarbonate backboard Heavy-duty steel frame; Slam Jam breakaway rim 2-wheel, 31-gallon base fills with sand or water Ratchet lift system adjusts from 8 to 10 feet in 4-inch increments Extremely stable 3-piece, 3-inch round pole