Keeping you Ready for the Road Ahead , the Fontaine 6.75" No-Slack 7000 Series Left-Hand Manual Release Top Plate boasts No-Slack technology that automatically achieves a secure, tight connection, safely securing trailers and cargo. This superior Fontaine fifth wheel top plate is made of resilient cast steel. It reduces shock input when braking or accelerating, extending component life and reducing maintenance costs. Also, excessive movement between the truck and trailer can affect driving. Without routine maintenance, your truck could disconnect while driving, causing significant damage to your cargo and others on the road. In the end, this heavy duty Fontaine top plate saves you money and downtime, providing the safe coupling your fifth wheel requires. FleetPride is your First Click in Heavy Duty .