Keeping you Ready for the Road Ahead , the 6.25" Fontaine No-Slack 6000 Series Left-Hand Manual Release Top Plate extends the life of components and minimizes maintenance costs. With No-Slack technology, this Fontaine fifth wheel top plate automatically adjusts for road safety and a superior secure, snug connection. Regular top plate maintenance is critical to eliminate unnecessary movement, semi truck disconnection, or damage that can affect the safety of your trailer's cargo and others on the road. This high-quality top plate has a durable stamped steel housing and weighs approximately 205 lbs. In addition, this Fontaine top plate reduces shock input when braking or accelerating. This heavy duty top plate provides long-lasting coupling and saves on maintenance costs. FleetPride is your First Click in Heavy Duty .