Sawblade or Directional Wheels. Photo by Kenneth Dwain Harrelson, uploaded on October 27th, 2008.
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"Speed, Power, and Attitude define the realm of Hot Wheels. One of the finest examples of these...
SB or Sawblade or Directional Wheel is a line of Hot Wheels Wheel Types.
The Split Window'63 was released as a Hi-Raker in 1980. Not sure why but Mattel has more names...