This is an official Rhino SoftBall SB 11, made with high-quality cork core material. The 12-inch softball is perfect for players of all levels, and this set includes six softballs. The Rhino brand is known for producing top-quality sports equipment, and this softball is no exception. It's great for softball players looking for a reliable and durable ball to practice with. The Cor 47 model is designed for maximum performance and accuracy, making it an excellent choice for players of all skill levels. Whether you're a seasoned pro or just starting out, this Rhino SoftBall SB 11 is sure to enhance your game.