CURT ROCKER BALL - 50mm/3500KG.

Features: 

• Dynamic trailer ball featuring ShockDrop technology
• Dampens jerking and jarring from bumps and potholes for smoother towing
• Cushioned isolators reduce rattling and vibration for a more comfortable ride
• Reduces shock loads to the vehicle during sudden braking or acceleration
• Minimizes stress on tow vehicle's suspension and brakes for extended longevity
• Retrofits onto most existing ball mounts to improve current towing experience
• Virtually maintenance-free with no airbag or bearings to service
• Grease zerk fitting provides easy lubrication
• Anti-swivel base fits 75mm wide ball mount tongues with 7/8" diameter hole