Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: What is the metal ring part inside of the jump rope called? I need extra because mine broke? Can seller provide?
Document: It's a good jump rope but has some flaws. There are no instructions for how to adjust the length. What you need to do is pop the handle that opens, pull and then cut the excess rope once you figure out the ideal length. If you don't, I don't see how it's possible to squeeze the rest back into the handle that pops open. You'll also need to loosen the metal ring that holds the rope in place inside the handle and tighten it in it's new location.
I bought this jump rope for my twin boys. They take a Tae Kwon Do class and wanted to learn how to jump rope. I bought this product mainly for the price, but I was a little bit concerned after reading all the reviews about length adjustment. I don't get it.... If you need to adjust the length (which I did have to), there is an extra crimping ring for each side. No need for knots.
Valeo must have changed the method of adjusting the length of the rope, now all I had to do was pop off the black plastic end cap, crimp the extra metal ring, and pop the cap back in. Took a knife and a pair of pliers, and took all of 5 minutes to get it all done.
Jump Rope arrived on time like always. I am 6'2" and had to take the rope in an inch or two on both sides. You will defiantly need pliers. I used needle nose. When adjusting the length use the pliers on the metal part and your hand holding the rope to adjust the length. I made the mistake of using my fingers for the metal part and pliers for the rope and scraped up my finger. No big deal though.
As others have said, the big surprise was when I wanted to adjust it. If you don't have pliers, you're going to be stuck. I didn't get any extra crimp pieces with mine, so I had to use a metal pick (typically used for removing cotter pins) to bend one of the existing stops off the end of the rope. Then I cut to the appropriate length, and re-crimped the end with pliers. Was more effort involved than should have been since it's advertised as "adjustable.
It wasn't clear that there are extra metal crimps on the rope inside the handle. I was trying to get the existing one off to adjust the length, but it was impossible to get loose. I cut the rope just below the crimp, and when I pulled the rope out of the handle the replacement crimp fell out. The directions should really state this clearly.
This is a great product! A lot of people have been commenting that the rope is hard to adjust and that had me worried for a while but when I got my product in the mail, i saw you can just pop the cap off the end of the handles (very easy to do with a flat surfaced tool (flat screwdriver/scissors). You then pull out the rope, cut however you want to cut and clamp down the extra metal clasp that's included inside the handle. REALLY EASY.
Overall it's an adequate jump rope for your cardio needs. That said, the rope itself is stiff...even after straightening and hanging on a hook for sometime the rope remains slightly kinked. That's not too much of a problem but I think the mechanism by which you cut and shorten the rope could be better than a simple compression ring you crimp to keep the rope from coming  out the end. The part that needs improving is the end cap. It's a plastic screw on cap that is apparently fragile.
The jump rope shipped very fast and worked very well. Until it broke about two months after I bought  it. The rope part just broke in half while I was using it. I don't think this rope is suited for jumping on rough surfaces like concrete.
The inside of the handle broke which caused the rope to twist when you jump. Its useless now. It was pretty cheap but it lasted for over a year. Maybe if I was more careful it would have lasted longer.
Answer: yes