330LB Leg Stretching Trainer(Red). 330LB Leg Stretching Trainer. Practical Wheels: They allow you to move the product easily and silently without disturbing others. can be used to stretch the inner leg muscles and hamstrings, beautiful legs, and exercise leg flexibility for dance, gymnastics, martial arts, or any other sports.The leg stretching split machine is perfect for all ages and fitness levels, sure to be loved by the whole family.