# how did Sima do this?

**URL:** <https://forums.yoyoexpert.com/t/how-did-sima-do-this/1351>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [April 2, 2009, 9:25pm UTC](https://forums.yoyoexpert.com/t/how-did-sima-do-this/1351 "2009-04-02T21:25:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yoyoman](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyoman/32/23_2.png) [@yoyoman](https://forums.yoyoexpert.com/u/yoyoman)\
**Post date:** [April 2, 2009, 9:25pm UTC](https://forums.yoyoexpert.com/t/how-did-sima-do-this/1351/1 "2009-04-02T21:25:30Z")

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I was just watching 3A Syndrome and it says that in his left hand he is using a Sigma Blade Zwie and it is starburst with a KK aluminum shim and responcive.  
then in his right hand he is using a Sigma Blade Zwie also  
and it is Dual O-Ring with a bind setting.  
First how did Shima have a starburst responce in his left hand? and with a KK and aluminum shim how is it tug responcive?  
then in his right hand there is a dual O-ring Sigma Blade Zwie so is there two types of zweis?  
or is there another awnser?

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**Author:** ![Samad](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/samad/32/19_2.png) [@Samad](https://forums.yoyoexpert.com/u/Samad)\
**Post date:** [April 2, 2009, 9:44pm UTC](https://forums.yoyoexpert.com/t/how-did-sima-do-this/1351/2 "2009-04-02T21:44:59Z")

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What I am thinking is this - Special Edition, or perhaps he got it custom made. Anyway, the way it is responsive is probably thick lube.