"The Titan Ramps Aluminum Heavy Duty Riser Ramps for large semi-trucks and 18 wheelers allow you to drive up the ramp for servicing or for displaying on the semi on your lot. The aluminum ramp is light weight and durable, providing a total of 10 tons or 20,000 lb. of capacity. The length of the ramp is 43"" to the top platform that is 20.5"" long. These heavy-duty ramps will raise your vehicle 9"" from the ground, providing plenty of room for servicing the under carriage and routine maintenance such changing the oil and replacing filters and plugs. The 16.75"" W ramp provides plenty of tire width when driving on or off the aluminum truck ramp. Weighing only 90 lb. combined, setting up these riser ramps is quick and painless, and the ramps can be stacked for convenient and compact storage."