UH

From Hot Wheels Wiki

UH or Ultrahot is a line of Hot Wheels Wheel Types.

Image	Letter Code	Type	Years Used	Notes
	UH	Ultra Hot	1984-1995	Originally for the Ultra Hots series in the mid-80's, but later used on other cars until 1995.
	NUH	Neon Ultra Hot	1984-1995	Originally for the Ultra Hots series in the mid-80's, but later used on other cars until 1995.
	GUH	Gold Ultra Hots