The Threeworlds Fusion Ultra Dragon Staff Hubs are the latest innovation in dragon staff technology. Designed to replace the F3 model, these hubs offer a superior level of performance and versatility. Key Features: Pressure-Fit Connectors: Easily insert the hubs into 19mm ID staff tubing (3/4 inch ID) for a secure and customizable fit. Versatile Spoke Configuration: Accommodates both 3 and 4 spokes, allowing you to tailor your staff to your preferences. Easy Spoke Installation: Simple assembly process with a 3mm Allen key. The Fusion Ultra Dragon Staff Hubs are a must-have for any flow artist looking to take their travel game to the next level! Note: If you want your hubs to fit onto a contact staff, check out the Threeworlds V3 hubs.