ZHUYING 30 PCS Ball Bungee Cord 6 Inch Heavy Duty Bungie Cord Balls for Tarp Tie Down Canopy Camping Tents Cargo Holding Wire Hoses Patio Umbrellas Awning (30pc Black&White)

We used these to attach outdoor vinyl banners to chainlink fences around our church. These are well made and when it's windy, they give a little and don't tear the banners, like zip ties would. Zip ties are too inflexible when it's windy. These are going to save us money, instead of having to purchase more banners after big storms.

These are really great for the price but the ball is much smaller than normal.

Was really hoping for heavy duty. These are Not heavy duty. I wouldn't even consider them medium duty. The line is very thin with a minimal amount of tension. The ball is so small you have to wrap the cord around it a few times to make sure it stays put. The hole in the ball that holds the knotted line is too large. I've had to pull them through and tie one more knot to make it large enough that it won't pull through even with very little tension. They do what they say, but I'm being very generous with three stars.