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Old 16-02-2007
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WheelNut WheelNut is offline
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Join Date: May 2006
Location: Grande Prairie, AB, Canada
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The hole in the B4 spur is 3/16" which is something like 5.5mm, and the Kyosho spur is 5mm. I didn't measure those, but I'm quite certain those are the numbers, judging by the bearing sizes.
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