The Drone Helios wheel is an all-new hollow-core wheel with the structural benefits of spokes. The core of the Helios is made of two pieces of 6061-T6 aluminum that were CNC'd pressed together and does feature a larger 86mm diameter. The larger core is designed to make the wheel more rigid and improve feel and response. A single Helios comes with Drone Ultra-Sonix bearings and weighs just 7.9 oz. It comes in the industry standard size of 110mm in diameter and 24mm in width. This means it will fit most pro scooter forks/decks, but feel free to contact us if you're unsure about them fitting your setup.