Get down and dirty with the Radioactive Conical 54mm 101a black and yellow skateboard wheels from Madness! These sweet little wheels come in a medium-sized 54mm diameter, perfect for accelerating over smoother pavement and performing flip tricks, while the 101a durometer lets you powerslide in style. Black and yellow radioactivity sign graphics on the sidewalls lend the wheels a touch of toxic steez, so you can add some radically irradiated vibes to any shred stick.