Proto Wheels are top notch quality wheels made here in the USA! Proto wheels come in 2 different urethanes. Grippers are for park and Sliders are for street. These slight varieties in urethane allow for longer lasting and smoother riding. Proto is a brand that creates and innovates for the rider in mind. The demand for Proto products is always high because Proto doesn't just mass produce, just to mass produce, they produce to improve the sport. Proto seeks to keep Proto an American company. Support Andrew Broussard and Proto!