Hammer Envy Tour Bowling Ball Obsession Tour was one of the most unique releases over the last few seasons; the asymmetric core with a low RG and low Differential offers bowlers a shape they have not seen before. The Obsession Tour is always in our pro’s bags, and the ball still wins tournaments. The Envy Tour was developed to add a stronger and more responsive cover to the Obsession Tour core, creating that same unique shape, just more of it. Bowlers will love the solid black color and the dark purple logos that don’t show as the ball travels down the lane, and the extra mid-lane and recovery will make this a popular ball for everyone. This ball is off the charts good. This ball is compared to the Obsession Tour but a tad earlier and stronger off the spot. The fact that this is a solid black bowling ball gives it the added assurance that it is going to roll great. This ball can be used on all types of patterns because it is great with surface and even polished. This is one of the smoothest and most predictable bowling balls I have ever thrown.