# D bearings? Why? **URL:** \ **Category:** General Yo-Yo\ **Created:** [August 21, 2021, 10:56pm UTC](https://forums.yoyoexpert.com/t/d-bearings-why/343616 "2021-08-21T22:56:55Z")\ **Posts on this page:** 1\ **Showing post:** 90
**Author:** ![Malachi](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/malachi/32/14039_2.png) [@Malachi](https://forums.yoyoexpert.com/u/Malachi)\ **Post date:** [May 10, 2022, 8:03pm UTC](https://forums.yoyoexpert.com/t/d-bearings-why/343616/90 "2022-05-10T20:03:58Z")
![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/5/f/c/5fcf53f6aa41037f830c10da9f1f851ec766396b.jpeg) From a conversation about bearing blanks. > [@Bearing Blanks](https://forums.yoyoexpert.com/t/bearing-blanks/324564): > > Just wanted to thank @YoYoExpertGarrett for the Bearing Blanks. I notice @Mystik got a few as well in the [mail](https://forums.yoyoexpert.com/t/what-did-you-get-in-the-mail-for-2019-2020/302416/7188). For all of you that were getting a few Bearing Blanks to try out, this can be the thread to keep track of our thoughts and share our experiences all in one place. Just searching the forums, Bearing Blanks have been an ongoing topic within threads but does’t have a home. Here are the ones I just received from @YoYoExpertGarrett; 1/2 Spec C Maple 1/2 Spec C Acrylic D size Maple Blank 2… Width can be a little more complicated. A bearing is MR105: 5 x 10 x 4mm C bearing is R188: .250 x .500 x .187 inches or 6.35 x 12.7 x 4.7498mm D bearing is 658: 5mm x 11mm x 5mm but… A bearings have a 3mm wide version. C bearings have a half-spec version (that is wider than half), 0.125 in wide or 3.175mm. D has a 4mm wide variant, MR115, and a 3mm wide variant, 685. --- _[View the full topic](https://forums.yoyoexpert.com/t/d-bearings-why/343616)._