These Cougar Car Ramp Extensions are designed to be used with Cougar Ramps for vehicles with low ground clearance. They create a smoother gradient for easier access when raising sports cars or custom vehicles. The extensions prevent lower vehicles from being scraped on the ramps. Please note that the Car Ramps are not included and must be purchased separately. Always use wheel chocks when using car ramps to prevent cars from slipping. Dimensions: 2.5 cm (D) x 12 cm (W) x 50 cm (L). Weight: 3 kg.