Review on XiaZ Dog Tie Out Cable: 100ft Heavy-Duty Trolley Runner for Dogs up to 250lbs - Ideal for Yard, Camping, and Outdoor Adventures, Includes 8ft Bungee Runner and Tree-Friendly Cable Sling by Ashley Nelson

Good solid cable with a buyable section. The preparation isn't the easiest, but if you have some upper body strength, you can do it quite well. (Tension part) The pretensioning is carried out on one side with screws and nuts. Having a second pair of hands to pull while you tighten the bolts is a godsend. The final tension is done on the other side with a double-sided screw / screw. Use a screwdriver (lever) and fasten it tightly. As far as I can tell, it's also rust resistant. The dogs weigh over 50kg and love to run up and down the line.