Rubber curb ramps measure 100 x 25 x 10 cm and provide a smooth stable slope with a load-bearing strength of up to 6800 lbs/3 tons Threshold ramps are made of high-density high-quality rubber which is flexible enough to absorb impact is compression-resistant reduces noise and allows your wheels to go up and down steps smoothly Sidewalk ramp's non-slip friction textured surface is designed to increase friction and prevent slipping. Square slot design at the bottom allows water to circulate and prevents rainwater buildup Wheelchair ramps are suitable for driveways stoops parking lots warehouses and sidewalks; portable curb ramps are easy for cars motorcycles scooters etc. to pass through Outdoor driveway ramps can be permanently installed in high-traffic areas using the integrated mounting holes at the bottom of each ramp for easy installation and placement of expansion screws