Thank you for viewing. This is a custom Finalmouse ULX. Size: S The switches for left and right clicks, including the wheel push, have been replaced with TTC Gold (3 total). The wheel encoder has also been replaced with a TTC one. It rotates much more smoothly than the original. As a bonus, I will include an aftermarket rubberized wheel. The exterior has been painted with automotive urethane (metallic red). The skates have been replaced with new dot skates. In addition, I will include the extra skates. Since I don't have the original box, I will ship it in a different Finalmouse box. Please purchase only if you understand that this is a used item.