Zipmagg Cable Tie Magnets are the easiest way to secure your trailer wiring harness to your trailer hitch and still have the flexibility to move it for easy connection. Simply use a zip-tie to secure to your trailer wiring harness and place magnet to metal portion of your trailer hitch. Simple and easy to install, position to hide or keep clear of moving parts! 4-pack includes 4 of the Zippmag magnets. Zip-ties are NOT included with the 4-pack.