Ultra-Pure Professional Valve Oil has a fast, light, and silky-smooth feel that players love. It is non-toxic, synthetic, odorless, and very long-lasting. So many professional players agree that Ultra-Pure Professional Valve Oil is the best! And now the best got even better! They revised the formula slightly but you will notice the results instantly. Smoother and faster than ever. Pistons feel like they are invisible and you are just pressing the springs. It is a great feeling!