Give your athletes the best possible playing field and help your athletes play baseball and softball just like the pros with the Cannon Sports Official 4-Way Pitchers Rubber. Officially sized for youth or adults baseball and softball. The 4-Way Pitchers Rubber is durably built to withstand countless games and practices. The 4-way design allows you to rotate your rubber between all four sides for four times the use and long-lasting game play. Easily install your pitchers rubber by simply filling the hollow core with dirt or clay and fitting it into the pitchers mound. The hollow core design helps reduce slipping, warping, and loosening, and can endure the pressure behind spikes and cleats as the pitcher follows through to provide the player with a strong base while they pitch. Give your games the most reliable feel with the Cannon Sports Official 4-Way Pitchers Rubber.