# Whats the use of this? **URL:** \ **Category:** Looking for Help/Recommendation\ **Created:** [November 4, 2023, 11:20am UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948 "2023-11-04T11:20:09Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Mo\_Arsh](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mo_arsh/32/261052_2.png) [@Mo\_Arsh](https://forums.yoyoexpert.com/u/Mo_Arsh)\ **Post date:** [November 4, 2023, 11:20am UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/1 "2023-11-04T11:20:10Z")
I got these super cheap yoyo string from amazon and they came with these “replacement cords” I dont know what these are or what’s the use of it, it would be appreciated if someone can tell the use of this:) ![IMG_1258](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/e/3/d/e3df07996f721b1171c0122fa9acdce1ab4fa152.jpeg) ---
**Author:** ![Shwa](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/shwa/32/108351_2.png) [@Shwa](https://forums.yoyoexpert.com/u/Shwa)\ **Post date:** [November 4, 2023, 12:03pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/2 "2023-11-04T12:03:46Z")
You say “cords”, are you referring to the 2 little black o-rings? I believe those are specific to Henry’s YoYo’s. I can see directions on the backside of the packaging but you won’t need them unless of course you have that throw. Or…. Are you referring to the green things, the string? 😀 ---
**Author:** ![Mo\_Arsh](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mo_arsh/32/261052_2.png) [@Mo\_Arsh](https://forums.yoyoexpert.com/u/Mo_Arsh)\ **Post date:** [November 4, 2023, 1:31pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/3 "2023-11-04T13:31:59Z")
no the cords ---
**Author:** ![Bobparty](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/bobparty/32/302913_2.png) [@Bobparty](https://forums.yoyoexpert.com/u/Bobparty)\ **Post date:** [November 4, 2023, 2:11pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/4 "2023-11-04T14:11:24Z")
You mean the yo-yo string? If it’s not the black o rings I’m not sure we know what you’re talking about ---
**Author:** ![Shwa](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/shwa/32/108351_2.png) [@Shwa](https://forums.yoyoexpert.com/u/Shwa)\ **Post date:** [November 4, 2023, 2:27pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/5 "2023-11-04T14:27:30Z")
Are you unsure how to put the “cords” on the yoyo. I think you are confused as these are the strings that you purchased. What kind of yoyo do you have? What are the entire contents of what you received? [![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/a/1/0/a10a167b4430207b501e89889a7797f2fcf5113c.jpeg "How to Put a String on a Yoyo and Adjust it for Play") ](https://www.youtube.com/watch?v=jJrtgrGmZQk) ---
**Author:** ![Mo\_Arsh](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mo_arsh/32/261052_2.png) [@Mo\_Arsh](https://forums.yoyoexpert.com/u/Mo_Arsh)\ **Post date:** [November 4, 2023, 2:31pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/6 "2023-11-04T14:31:56Z")
im talking about these ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/c/1/0/c103c8730bd85e898c98b40c614f03812f391676.jpeg) ---
**Author:** ![Mo\_Arsh](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mo_arsh/32/261052_2.png) [@Mo\_Arsh](https://forums.yoyoexpert.com/u/Mo_Arsh)\ **Post date:** [November 4, 2023, 2:33pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/7 "2023-11-04T14:33:37Z")
a normal yoyo. I was just wondering what is the use of the black o ring thingy and on the back of the package this is shown ![IMG_1264](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/c/6/b/c6b328b4d695464792c11ce61f91068b0999ce9a.jpeg) ---
**Author:** ![CaptainEliHops](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/captainelihops/32/270173_2.png) [@CaptainEliHops](https://forums.yoyoexpert.com/u/CaptainEliHops)\ **Post date:** [November 4, 2023, 2:44pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/8 "2023-11-04T14:44:43Z")
Although I do not have a yoyo that uses these, it seems as if they are some sort of spacer that would go in between the bearing and the body of the yoyo. They also look similar to these o rings for hubstacks: > **[YYF Hub Stack O-Rings](https://shop.yoyoexpert.com/products/yyf-hub-stack-o-rings)** > > YoYoFactory introduces the break through Hub Stack technology allowing you to literally grab your yo-yo while spinning and hold it in your hand. These are replacement o-rings for your hubstack yo-yos. Sold in pairs. YoYoFactory Hub Stack Technology Again, I am not certain, but I hope this might point you in the right direction 🙂 ---
**Author:** ![Mo\_Arsh](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mo_arsh/32/261052_2.png) [@Mo\_Arsh](https://forums.yoyoexpert.com/u/Mo_Arsh)\ **Post date:** [November 4, 2023, 3:16pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/9 "2023-11-04T15:16:29Z")
Thanks a lot:) ---
**Author:** ![Shwa](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/shwa/32/108351_2.png) [@Shwa](https://forums.yoyoexpert.com/u/Shwa)\ **Post date:** [November 4, 2023, 3:21pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/10 "2023-11-04T15:21:13Z")
Yup. Those are for a specific yoyo made by Henry’s. No required for yours. ---
**Author:** ![Mo\_Arsh](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mo_arsh/32/261052_2.png) [@Mo\_Arsh](https://forums.yoyoexpert.com/u/Mo_Arsh)\ **Post date:** [November 4, 2023, 5:24pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/11 "2023-11-04T17:24:36Z")
Thanks a lot too mate ---
**Author:** ![Captrogers](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/captrogers/32/647012_2.png) [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)\ **Post date:** [November 4, 2023, 5:49pm UTC](https://forums.yoyoexpert.com/t/whats-the-use-of-this/387948/12 "2023-11-04T17:49:58Z")
Those are replacement o rings for the old Henry’s transaxles. They probably also fit newer hubstack yo-yos so might be good to keep them as spare parts.