EZ Score is a convenient and easy-to-use personal scoring system that fits in your tennis bag! It fits snugly on the net, out of bounds. The white on black and black on white numbers, 0-6, can be clearly seen from both ends of the court. The Pro-Set model is numbered 0-9 at the request of high school coaches and tennis product retailers that don’t play multiple sets. Made of sturdy, durable styrene, EZ score is built to last so you can eliminate score disputes!