Lifetime Portable Basketball Hoop with 44in Impact Backboard 44" Impact backboard is virtually unbreakable. Telescoping mechanism adjusts from 7.5 to 10-Feet 6-Inch increments 27-Gallon base fills with water or sand and rolls to your desired location All-weather resistant, deigned to withstand the harshest elements 18-Inch black solid steel rim with 1/2-Inch steel braces, 5-year warranty Pole Size is 2.75 inches Round