It is more stable than one rail. It prevents the flip-over when rowing. Included Components User Manual x 1, Q1S Magnetic Rowing Machine x 1, Parts Kit x 1. It is partially pre-assembled and can be moved around easily.
WENOKER Rowing Machine, Magnetic Rowing Machine for Home, Upgraded 32-Levels Resistance with Smart Electronic Knob, 350 LBS W
WENOKER Rowing Machine, Magnetic Rowing Machine for Home, Upgraded 32-Levels Quiet Resistance with Smart Electronic Knob, 350
Rowing Machine, Magnetic Rowing Machine for Home, Upgraded 32-Levels Quiet Resis
Sunny Health & Fitness Magnetic Rowing Machine for Home Exercise, Quiet & Smooth Rower with Compact Storage and Optional Free
Magnetic Rowing Machine for Home | Adjustable 8-Speed Booster | Burn Fat & Sculpt Muscles | Supports Up to 265 LBS | Phone/Ta