What does sway bar look like?

A sway bar is used to control the sway of a trailer towed with a ball hitch. it is a two piece assembly with a handle attached to a screw tightener. the sway bar attaches to your hitch and to the A frame on your trailer. It attaches through the use of 1"ball and cups on each axle sway slides back and forth as the trailer and tow vehicle articulate. The screw tightener clamps down on a brake shoe which causes friction to limit the amount of movement on the bar.