Model: S5000-03 This prone leg press machine builds key muscles in your legs. This machine develops the user quadriceps, hamstring and gluteus. It improves your strength in these muscles and you can use it to overcome imbalances.The main frame adopts size Type 100 x 50 x 3T / Type 80 x40 x 3T pipes. All pipes are Q235 qualified pipe; Hard chrome weight plate sleeves are used on the machine to make sure durability and well exercise performance on this machine. This machine with ergonomic design on exercise movement parts, which make sure smooth workout.