Carrying Handle and Foldable Ramp: Our portable wheelchair ramp, folding wheelchair ramp is easy to install and remove, can be folded, and you can carry the portable ramp with carrying handle. Double Non-Slip Design: Threshold ramp boards are non-slip design and the ramp surface is covered with black matte non-slip surface. Safety and Durability: The wheelchair ramp /door ramps for thresholds can support a total weight of 600kg and is made of durable and lightweight aluminum. It is equipped with flaps and reflective strips that not only prevent accidental falls. The bottom transition plate is designed for smoother passage without getting stuck. Widely Used: This portable skateboard ramp can be used for climbing, descending stairs or garage steps, also can be used for various vehicles in front of the home, solve wheelchair, unloading trucks, entry, steps, doorways, curbs and ideal stairs ramp. NOTE: Please read the buying guide before purchasing. Maximum weight capacity is 600 lbs. Choose a wheelchair ramp that fits the size of your steps. 5-10 foot ramps are heavier and therefore suitable for daily use at home entrances, 2-4 foot ramps are lighter and suitable for steps or curbs. It is normal for longer ramps to sink slightly during use, but they will bounce back quickly. How do I choose my size? Before ordering, measure the height of your steps and consider the circumstances in which you will be using the ramp, then choose the right size according to the chart. The maximum angle of use is 5° for manual wheelchairs, 7° for electric wheelchairs, 10° for pushchairs and 14° for carts. If the height of use exceeds the reference height, please select the long size.