Adjustable Pop-Up Height for All Training Needs Unique adjustable height design, you can set the pop-up height from 50 to 127 cm to simulate different pitching trajectories. Perfect for practicing various swing types and skill levels. No Pitcher Needed, Practice Anytime This ball pitcher automatically ejects practice balls, simulating real pitching motion. You can practice hitting anytime at home without a partner or pitcher, perfect for daily solo training. Durable Spring-Loaded Construction Made of high-strength nylon with reinforced spring, sturdy and durable for long-term use. Resists breaking on contact, no complicated gearbox, lower failure rate. Portable and Easy to Use Compact and lightweight design, easy to carry to the backyard, park, or baseball field. No complicated assembly required, ready to use right out of the box. Compatible with Standard Practice Balls Comes with 1 porous practice ball, also compatible with most standard porous practice balls. No need to buy expensive special balls, saving your costs.