Each ramp has a special textured surface to increase friction and prevent slippage. The sturdy base structure makes our ramp more stable and not easy to move during use. Designed to allow the sweeping robot, skateboarding, wheelchair and more to travel safely on uneven ground or doorway. Features - Color: Black -Material:PVC - Size: 50.00X27.00X11.00cm/19.65X10.61X4.32in -Fine workmanship: The workmanship is fine, the details are handled well, and the damage is resistant -Convenience: The Slope Ramp can be spliced and tailored freely, bring more convenience when do cleaning -Multiple uses: It is suitable for home use and can help the sweeping robot to easily climb steps -Multi-occasion: Suitable for skateboarding, electric car, toy car, sweeping robot and other ramps filling and walking -Practicality: The low-gradient step is practical and cannot be used for driving on the road Package list: 1 x slope ramp 2 x expansion screws