What's all the Hoopla about? The 8412 Hoopla Recreational Portable Netball System provides durability for league and tournament netball games. The 2-1/2" O.D. steel post allows for easy adjustment from 8' to 10' height of the 15” diameter official rim. The post snugly fits into a triangular steel base for maximum stability during competition play and easy portability of the unit.