0-DWH4MM Dave's Hubs - 4mm Hub Set of Two <p><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">These are for mounting the Lite-Flite foam wheels on an insect class fighting bot. They can be used with Lite-Flites from 1 3/4in. diameter to 3in. diameter after the plastic Lite-Flite hub has been removed and discarded.</font></p>
Robot MarketPlace - Dave's Hubs - 4mm Hub Set of Two
These are for mounting the Lite-Flite foam wheels on an insect class fighting bot. They can be used with Lite-Flites from 1 3/4in. diameter to 3in. diameter after the plastic Lite-Flite hub has been removed and discarded.
No better way to mount a Lite-Flite. I've haven't had a wheel come off yet using these.
7/17/2009
Thomas Kenney(MH Robotics)
This hub is the most straight forward way to adapt a Lite-Flite to a 3-4mm shaft. The bore can also be drilled out to around 6mm if needed.
It's also worthwhile to replace the 10-32 flat head screw with a hex key socket cap screw that can be cranked tighter, and also to add some loctite to the set screw.
2/3/2010
Troy
Excellent!
Highly recommended! Very easy to install and they work great! It's a good idea to locite the setscrew to the shaft as they can loosen a little.
I use it with the B16 gearmotors and they work well.
$20.99 
Installation Guide 
1 3/4 Inch Diameter Lite Flite Wheel 2pk
2 1/2 Inch Diameter Lite Flite Wheel 2pk