Longstreth Grays JB7 Composite Stick The Grays JB7 field hockey stick is designed to maximize power during hits, drag-flicks, and aerials. This stick is ideal for advanced players who want to dominate the ball and execute powerful plays while maintaining supreme control. The construction of the Grays JB7 enhances performance in all key areas. If you like the feel of this stick but want more Carbon, you might like the Grays PB9 field hockey stick.