I saw this at a dog park and I thought WOW this is awesome. I heard people payed a decent amount of money on this too, so I was thrilled to see this as an add on item and pay almost nothing for it.  This is a great buy and my dog can not get enough.  I just need to find a large enough area to really take advantage of the distance this can throw the ball!  NO more dog saliva on my hands, this rocks!!!