ARIES 214048 3-Inch Round Black Stainless Steel Nerf Bars, Select Chevrolet Silverado, GMC Sierra 1500, 2500 HD, 3500 HD dinghy Dynamic trailer ball featuring ShockDrop This particular class 2 Hub Face Length (Inches):68 Mounting 56340

ARIES 214048 3 Inch Round Black Stainless Steel Nerf Bars, Select Chevrolet Silverado, GMC Sierra 1500, 2500 HD, 3500 HD dinghy Dynamic trailer ball featuring ShockDrop This particular class 2 Hub Face Length (Inches):68 Mounting 56340 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 2 1 2" wide ball mount tongues with 1" diameter hole Forged steel construction for dependable towing power Durable carbide black powder coat finish on base and chrome plating on ball Standard trailer ball diameter fits 2" couplers Rated for 7 without eliminating other towing options