Originally posted by jfc_tech
the serpent includes the wrench(cross) to open, tight the wheel nut. I think its 5mm. 
Im talking about the purple aluminum wheel hub, where the wheels attach onto it. I think your talking about the wheel nut that goes on the outside of the rim to secure it on the car? I forgot what its called but it also has a 1.5mm screw that holds it to the shaft.