This listing is for one set of Brand New Supertech Valve Guides for the Nissan VR38DETT from the R35 GTR chassis fits Intake OR Exhaust 

Included = 12x Valve Guides (Fits Intake or Exhaust) --> 2 Sets Needed Per Engine 

Material - Copper Alloy (High Heat Transfer) 
Valve Stem Diameter = 6mm 

Part Number = GDE-NVR38CO-Ei