The Stee-Rike 3 Premium Baseball Training Balls set includes 10 balls in total, with 8 white and 2 red balls made of durable plastic material. The balls are designed for training purposes and feature a 2.75-inch size, suitable for baseball practice sessions. Made in the United States, these plastic baseball training balls weigh 12 oz and are part of the Stee-Rike 3 product line, ensuring high quality and performance for improving your baseball skills.