Max Capacity: 800lbs. Why Choose Our Wheelchair Ramp?. The ramp may slightly sink during use but will rebound quickly. Unit Quantity: 176.0 ounce Material: Aluminum,Stainless Steel Features: Corrosion Resistant,High Traction Surface,Portable,Weather Resistant,Non-Slip Surface,Folding,Carrying Handle Suitable For: Wheelchair,Scooter,Walker.