Skateboarders, listen up! These Spitfire Formula Four Conical wheels are absolute game-changers. Coming in at 56mm diameter with a 101a durometer rating, these bad boys give you the perfect balance of speed, grip, and slide control. The conical shape provides more surface area for better stability on transitions and landings, while the Formula Four urethane is legendary for maintaining its shape and not getting flat spots. The white wheels with green and black graphics look seriously clean on any setup. Just so you know, bearings aren't included - you'll need to use your own. But once you get these mounted, you'll understand why Spitfire has such a loyal following. They break in fast and keep their pop for ages, whether you're hitting the streets, park, or bowls. The 101a hardness is that sweet spot that works for pretty much every skating style - not too hard, not too soft. Plus they come as a full set of four (because, you know, skateboards typically need that many wheels). If you're looking to upgrade your ride or just need some fresh wheels, you can't go wrong with these Spitfires. They've been tested and proven by skaters worldwide, and they're built to handle whatever you throw at them.