Check the listing for details. Demco 9518307 Classic Baseplate. Condition: New. Listed at 280.89 USD. Classic Baseplate (9518307) by Demco®. The height from the ground to the bottom of the attachment tabs: 19". The distance from center to center of the attachment tabs: 32-3/4". Accessible, but Not Visible. Baseplate is adaptable to Blue Ox tow bars with a 3-prong clevis. At Demco, takes your safety very seriously! That's why engineers use Finite Elemental Analysis (FEA) when testing baseplates for strength, functionality and durability. Baseplates are designed specifically to respect the beauty and design of your vehicle. On most vehicles, they won't protrude out, hang below or rise above your bumper or grill. Demco Baseplates bolt permanently to the chassis of the towed vehicle and provide a secure, reliable attachment point for all Demco tow bars. Tow bars feature easy hook-up and disconnect.