When the ice melts, keep playing with the Franklin Sports NHL Pro Commander Puck! It has a patented high-performance design. It provides the ultimate speed and consistency on smooth surfaces. The knurled edges give it enhanced control and the weighted perimeter promotes stability. NHL Licensed product. High-performance design Ultimate speed & consistency on smooth surfaces Official 3.9oz. weight for professional play Knurled edge for enhanced control Specially blended shock-absorbing core material Durable high-density low-friction glide pins