• Roadway "Style" Shift Knob Extensions Kenworth Peterbilt Tractor 1/2 - 13 standard semi truck tractor  Thread. W/ Premium round roadway style extension. 
  
  
• Comes with hex adapter 1/2 13 female to female and two 1/2 jam nuts
  
  
• Stainless steel with chrome plating. Not made by hanco