I used a 7/8″ auger bit, though you can also use a 3/4″. You can get longer ones to drill through multiple studs at a time and right angle drills. There were a few times I wished I had the right angle drill but this set-up worked fine. Be sure to locate cable away from areas you where you are putting plumbing or gas lines in, places where you will be securing cabinets and built in furniture to the walls, etc.