Info:  This is a used XLR8R swing trainer, now sold by tour tempo under the name of Speedball.  It improves clubhead spead and impact.  I went from 100 mph to 110 in the last year and I think this helped quite a bit.   This comes with the 5 iron club, impact target and velcro mat that holds the target.  Worn but still works like new.  Check out their site here: 
http://www.tourtempo.com/speedball.html
 
SPEEDBALL®
 
The SPEEDBALL® teaches the feeling of Square Impact better than anything else on the planet. And Square Impact is the most important factor in achieveing straight shots. According to the book, “The Search for the Perfect Swing” (the definitive study on the application of science to the golf swing), to hit a ball long and straight boils down to three things:1. Clubhead square at impact.2. Clubhead moving down the target line at impact.3. at Maximum speed.The SPEEDBALL® uses a principle that we call FeedForward. FeedForward means that you learn the feeling of the correct movement thru doing the action. How is this different from conventional training aids and video systems on the market today? Well, most just give you the results of the last swing that you took, or only work on one aspect of the swing. As many of you already know, those results that you get have totally nothing to do with acquiring the correct feeling for the right action. Just because you intellectually KNOW that you sliced the last shot, or that your takeaway was too much inside last time doesn’t mean that you can make the next one go straight. The current trend is video analysis is a good example of this. Much time is spent in analyzing exactly where every body part is at any particular point of the swing; but as golfers have found out, just knowing this information doesn’t mean we can change it. The reason that this information is totally useless as far as changing your swing is that it does absolutely nothing to give you the feeling of what you are trying to accomplish. The golfer’s lament - “I KNOW what I should be doing, I just can’t do it.” Bobby Jones stated that squaring the clubhead up at impact can only be achieved by our subconscious mind….which is programmed by our FeedForward principle. The beauty of the SPEEDBALL® System is that it ingrains into your subconscious mind two of the most important and difficult to learn essentials of the golf swing - (1) Squaring the face of the club up at impact, and (2) acceleration of the club at and thru impact. … Click For More Info