Hot Wheels Speed Driver Engine / Bit Holder
thingiverse
The Hot Wheels [Speed Driver](https://hotwheels.fandom.com/wiki/Speed_Driver) shows on the package how it is designed to be used with bits, but there always seemed to me to be something missing: A way to hold the bit in place! The bit is a 1/4 drive and 2" long. Here is the one I used: https://www.amazon.com/dp/B000RGW0C8 Interestingly, and quite disappointing, is that the newer castings (green and red w/ silver wheels) had the chassis redesigned, and for some reason the 1/4 drive wont fit. I'm not sure if that was on purpose or not.
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