Use them to warm-up joints and muscles for strength and flexibility training

and a random oscillation

This lightweight

Helps target tightness within back

Lobster Elite Grand Four Machine Type_Kids' Squash Racquets Use them to warm-up jointsThe Lobster Elite Grand Four Machine is the world's most advanced battery operated portable tennis ball machine. The Elite Grand Four offers unrivaled full random triple oscillation. This revolutionary design allows the machine to throw balls throughout the court spectrum, mixing up speed, spin, trajectory and oscillation. Triple oscillation allows the machine to oscillate vertically and horizontally, allowing for random shots simultaneously.