This high-speed training tool allows the batter to see, track, and practice hitting 6 different pitches at speeds up to 65 mph. A quick jerk of the handles speeds the ball down the cords to the hitter. The ProZip SpeedToss is used with metal and wood bats. The device teaches the highly acclaimed "top-half" hitting technique. The ProZip cords serve as a "swing guide" to help batters develop great line drive swings. The device sets up in seconds and is great for team and home use. The device is suitable for advanced users including high school and college teams. The ProZip SpeedToss can be used indoors and outdoors. It is a great pre game warm-up.