Our excavator weighs 6600 pounds, will go through a 5'4" opening, can dig 8 feet dieep, and dig buckets are 12, 16, and 24 inches wide.
We use a rubber tract to avoid damaging concrete or blacktop like you would see with a metal tract. Our drill attachments are 9, 12, and 30 inches wide and up to 6 feet deep.