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Question: I have about 50 extension cords I use every year for my Christmas display, varying in lengths from 15-100 feet.  Can these wraps be used for them?
Document: When I first opened the package, the first impression I had was that they were not what I ordered. But upon measuring them, they are. It's just that they are much shorter than I imagined they would be. These are only suitable for very short, thin cords such as A/V cables, standard household extension cords, etc. I was looking for ones that I could use to store power cords such as those from 25-100 feet. It was my mistake to order these.
These cable ties are terrific for any cable you need to bunch up and organize. I am using themprincipally on sound equipment like 18-20 ft guitar cables, 15-foot speaker cables and thelike. When I get around to it I will also organize my stereo cables and extension cords as well.You will receive 100 of them stuck to each other in a single row; one on top of the other.
I bought these to wrap around strings of Christmas lights. We did a project at the local park and have over 100 strings of lights to take down and put up again next year. These worked great to keep them organized.
I LOVE these! I am organizing guru and these can be used on any and all cables. I even used them on my Christmas lights this year. I  have so many that I even gave some away to friends who also loved them.
When I originally saw a 100 pack of these things I thought to myself, its going to take me a really long time to go through 100 velcro ties. I immediately went through my house, throwing a tie on every extension cord, every loose cable or wire. What's nice about these, is that they wrap around the cord so it stays on while the cord is in use. Before I knew it, I was half-way through the package. And I haven't ever gotten everything!
Bought these cable ties, and immediately applied them to anything even remotely cord-shaped in my house. Put them on all of my chargers. Speaker cables. Extension cords. I used hate untangling bunched up cords. Now, I only have a sense-memory of what that's like, as that problem has been completely eliminated from my life.My traveling briefcase is clutter-free--all my chargers wrapped up neatly, like little electricity gifts in every hotel room I stay in.
I got the 50 pack at first at a local hardware store because I didn't think I would use more than 50. After I used all 50 I still had a lot of cables to go so I got the 100 and now have plenty! The 100 pack on Amazon barely costs more than at a local store anyway; I should have gotten it first.
My favorite feature of these cable ties is that they loop around the cable (or other object) and back through the cable tie (like threading a needle) so that you don't loose them. They do a great job of holding cables together despite inexpensive construction and at about 15 cents a piece, the price is unbelievable. I used the word inexpensive, because they aren't cheap. The wraps are Velcro all the way on both sides instead of just the last inch.
These are my favorite tie-wraps. They stick to themselves at every angle and side. This means they can be trimmed for use with short and or thin cables (think USB, etc.) so it's a one size can work for most applications. I have used others that don't have the same grip for heavier cables when not wrapped multiple times. These are strong and quite versatile.
If you are a gadget freak like I am, you probably have chargers and cables littering every corner of your home. Many of these probably only get used every now and then. I used to use various tie wraps lying around the house to keep my cables bundled up for storage (you know the kind that you might find sealing the plastic bag for a loaf of bread). But eventually, these wire ties will wear out and break.
Answer: It will depend on how thick the cords are and how tightly you wrap them. The wraps are only 8 inches long, so if you're trying to go around something bigger, it will be tough. For me, if I can wrap my middle finger and my thumb around it and touch, I can use this wrap. Hope that helps!