Use with Trend Sports Crusher Mini-Ball pitching machine. Golf ball sized balls improve coordination. Dimpled whiffle style ball. Comes in pack of 24. Recommended for age 6 and up. Bring hand-eye coordination to a new level with the Heater Sports Crusher Fast Mini Poly Balls - Pack of 24. These dimpled, golf ball sized balls will help hone coordination. They are designed for use with the Trend Sports Crusher Mini-Ball pitching machine. Continue improving your baseball skills with these challenging mini balls.