ZETT Zett PROSTATUS Prostatus Knock Bat - Brand: ZETT - Model Name: PROSTATUS - Country of Manufacture: Japan - Type: Knock Bat Thank you for viewing. Type: Knock Bat Material: Wood Material: Japanese Oak + Maple Knock Bat Zett [PROSTATUS] Wooden BKT1401 Navy Length: 89cm Weight: Average 560g This knock bat is popular with high school baseball managers and coaches. For both soft and hard baseballs. Made in Japan for peace of mind. PROSTATUS is the highest quality product among Zett products. This knock bat incorporates the opinions of professional baseball coaches.