PENSUN Wheelchair Ramp, Threshold Ramps, Non-Skid Portable Foldable Wheelchair Ramps for Steps, Lightweight with Handle, for Home, Stairs, Doorways, Curbs / 600lbs CapacityHIGH QUALITY MATERIALS AND UPGRADE DESIGN: Wheelchair ramp is made of high quality aluminum materials, sturdy and durable. The transition plate at both ends can better fit the ground, improve the stability of the ramp and reduce noise. The design of yellow reflective strip can ensure your safety to use at night. SAFER SLIP RESISTANT THRESHOLD RAMP: The surface of wheel chair ramp has a black frosted anti skid layer, and the top is equipped with safe