These knobs should be removed when folding the treadmill. The 43.31" x 15.75" running belt makes every step smoother and more comfortable.
YUEJIQI 3220S Treadmills for Home, 15% Auto Incline, 3.5HP Quiet Brushless, 300Lbs Capacity, 16"x42" Wide Running Belt, Max 8.5 MPH, One-Touch Folding Treadmill with Bluetooth APP & Pulse Monitor
ATEEDGE Treadmills for Home, 15% Auto Incline, 0.5-10 MPH, 18" Belt, 3 HP, 350lb Capacity, Foldable, Bluetooth App
Treadmills for Home, 15% Incline Treadmill, Folding Treadmill Filpped Screen
