Improve your swing with the SKLZ(R) Bolt Balls. These lightweight mini foam practice balls provide more continual hitting practice and are also great for soft toss drills. Made for use with the SKLZ(R) Lightning Bolt Mini Ball Pitching Machine (not included), these small size balls encourage more focused batting training. Includes 12 balls per purchase. FEATURES: Lightweight foam practice balls Provides for more continual hitting practice Great for soft toss drills Small size encourages more focused batting training Designed to improve hand-eye coordination skills Use with the SKLZ(R) Lightning Bolt Mini Ball Pitching Machine (not included) Also ideal for use with the SKLZ(R) Lightning Rod, Quick Stick, or Live Wire hitting trainers Circumference: 4" Includes 12 balls per purchase Model: BOLT-000-12