It is more stable than one rail. It prevents the flip-over when rowing. It is partially pre-assembled and can be moved around easily.
YOSUDA Magnetic Rowing Machine for Home - Rower Machine Use with Bluetooth, App Supported, Rowing Machine for Beginners to At
Rower Monitor Rowing Machine Display Screen w/ Bluetooth APP for Rowing Machine-
Rower Monitor Rowing Machine Display Screen w/ Bluetooth APP for Rowing Machine
3 in 1 Exercise Bike,Squat Machine,8-level Adjustable Magnetic Bike for Home with App,Squat Rowing Machine, Low Noise Indoor Cycling Bike with 300lbs Weight Capacity,Home Workout Machine
Stamina ATS Air Rower Machine with Smart Workout App - Foldable Rowing Machine with Dynamic Air Resistance for Home Gym Fitness - Up to 250 lbs Weight Capacity
Stamina ATS Air Rower Machine with Smart Workout App - Foldable Rowing Machine with Dynamic Air Resistance for Home Gym Fitne
