The Wydmire 2 PCS 5" Rubber Car Curb Ramps Durable rubber material prolongs serve life Large load bearing of 33 000 lbs for more stability and security Rough surface increases friction during rainy days for better protection Suitable tilt angle makes it easy for cars to drive on to the step Lightweight of 42 lbs with compact size for easy carrying and storing Available for various vehicles over curb or elevated sidewalk Grid structure at the bottom for larger supporting force Water grooves to prevent water accumulation and deformation of ramp Two recessed mounting holes allows you to install it with bolts