# MK1 and Spinworthy present - The RBC!

**URL:** <https://forums.yoyoexpert.com/t/mk1-and-spinworthy-present-the-rbc/349268>\
**Category:** YoYoExpert Releases and Restocks\
**Created:** [December 19, 2021, 4:41pm UTC](https://forums.yoyoexpert.com/t/mk1-and-spinworthy-present-the-rbc/349268 "2021-12-19T16:41:11Z")\
**Posts on this page:** 1\
**Showing post:** 200

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**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\
**Post date:** [January 20, 2022, 3:02pm UTC](https://forums.yoyoexpert.com/t/mk1-and-spinworthy-present-the-rbc/349268/200 "2022-01-20T15:02:58Z")

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![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/7/f/e/7fe3d12061758ea6cbba17fa1dc944a862644876.jpeg)  
Cleaned = dipped in solvent to get rid of any stray lubricant  
Beefcaked = stack two of them on top of each other. An old modding technique.

Note the groove that forms between the two bearings!

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