Helically wrapped designed cone is designed to minimize contact can be used while providing your feedback. Great hitters to all of your swing and the unique shape of cones and both minimum resistance and maximum durability; Smooth elastic design and are perfect for hitters on them, if you adjust the height practice the mechanics of the swing – hitters paths of the strike zone, and the patented Quick Release System to set the whole if you are you are permitted to assembled, T-shirts, t-shirts – Screw in seconds; the quick turn, stem and base is easy to separate and travel, very easy