Wind-Pitch "In The Circle" Fastpitch Instruction CD For fastpitch softball pitchers and coaches of all skill levels. Interactive CD e-book lets you learn, practice and review at your own pace. Use the "Quadrants System" technique of windmill pitching, learn the importance of body orientation, hand/thumb location, ball seams, grips and more. Includes more than 30 minutes of integrated video clips, and six separate "Quick Tips" booklets for additional pitching tips. Runs on PC format.