You can freely assemble and customize the batting cage size based on the length of the pipes and the dimensions of the net you purchase; these fittings are designed to fit pipes with a diameter of 1-3/8 inches. Designed to connect and secure existing straight steel EMT pipes or steel fence pipes (which can be purchased at your local hardware store), the bottom horizontal side support fittings are used to attach nets or tarps and come equipped with quick-turn eye bolts and illustrated instructions, making it easy for beginners to assemble quickly and securely. Made of galvanized steel, all fittings effectively resist rain erosion, UV exposure, and moisture corrosion for long-lasting durability. Built to professional training standards, these fittings balance practicality and durability, making them suitable for home training, school teaching, club activities, and more. They support both temporary setups and long-term fixed installations, flexibly meeting all types of baseball practice needs.