Syedee dd07 leg press machine is a fully upgraded version of dd06. Larger capacity: 1000lbs training weight 600lbs storage weight. Lower price: dd07 is priced at 700 saving you over 100 compared to dd06. Stronger function: widen the squat pedal and train leg muscles on a larger range. More secure: 5-height choices patented safety limiter. More smooth: using linear bearings to achieve smooth leg exercises throughout the entire exercise. Linear bearings have a longer service life compared to roller bearings.