The Length for the Most Gentle Angle: The length of dog truck ramp is increased to 170cm, allowing for most gentle angle between the pet ramp and the car and SUV, better reducing the dog's muscle and joint straining caused by jumping, easing pain and better protecting against injury, make the large dog vehicle ramp easier for short legged, older, handicapped or injured dogs to get into and out of the car, SUV or truck.
eBay