These are the real McCoy: The exact pair of skewers Shimano supplies with their Dura Ace 7800 10-speed hubs, as well as their pro-caliber WH-7800 series wheelsets. Sure, the shafts on these are steel, not Ti like some of the other high end skewers out there. But for goodness sakes the pair only weighs 122g(!) Why do we love these? Because Shimano has mastered the science of knurled nuts: We can absolutely, positively assure you that your wheels will never slip in your dropouts, no matter what sort of power you put the chain under. It's the death knell of super-light skewers: They don't hold your rear wheel in place! These Dura Ace skewers are dialed, and they're worth every penny. Compatible with any set of road wheels we sell -- not just Shimano.