The Spalding 72351 Portable Basketball Hoop with 44 Inch Polycarbonate Backboard features a three piece 3, 5 inch pole and the Slam Jam breakaway basketball rim, The polycarbonate backboard is five times stronger than typical acrylic, making it nearly impervious to cracking or shattering, The Pro Glide lift system allows you to easily adjust the basketball hoop from 7, 5 - 10" in 6"" increments, 37, 5-Gallon base fills with water or sand for stability, 5/8"" Solid steel Slam Jam breakaway rim, Three-piece steel pole (3, 0"" round), SKU: SPLD099