Question: the two most common vessels used for cabg are the?
Answer: Arterial Grafts.
Internal thoracic arteries (also called ITA grafts or internal mammary arteries [IMA]) are the most common bypass grafts used. ... 
The radial (arm) artery is another common type of arterial graft. ... 
Saphenous veins are veins in your legs that can be used as bypass grafts.