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This Multi-Hub Wheel is solid, a lil' chunky, but it won't make your robot bulky. It even comes in Adafruit black! Each order comes with one wheel and two different sized hubs to make connecting super quick and easy. The hubs may come attached to the wheel with a little plastic flashing, so you'll want diagonal cutters to trim them out or you can twist them out
The real magic with this wheel is that you can use it with a wide range of motors! Compatible with TT Motors, 'N20' DC geared motors, and LEGO cross-pieces. Really, this is a universal wheel for any purpose.