Could you tell me the number for ? <a href=" http://vcreme.edu.vn/generic-finasteride-1mg-buy.pdf ">buy finasteride 1mg online</a> The stinging sensation of a bad hit is caused by the vibrations that ripple through the bat after making contact with the baseball. Russell says that the bat actually flexes back and forth immediately after hitting the ball. "There are a number of patterns in the shapes that the bat vibrates with," he told ABC News.