Heavy pressed cardboard passed correctly making perfectly round 2" holes very easily. I had to make two holes and this did the job and now it will probably sit idly in my garage until they put me in the 6 foot hole. No pilot hole is required as there is a good chunk down the center to get you started and the tool doesn't wander around. I was using an old cordless drill with an old battery so I loosened it up so it wouldn't lock up due to lack of power.