We recommend any good quality 1/2 drive cordless drills there are so many 18 volt to 20 volt lithium ion drills on the market. We do not want you using hammer mode or any impacts or electric drills with a generator. Get a cordless drill with a light and a safety handle for two hand operation on the drill . Use low gear or 1st gear when operating the drill. If you want to call us and talk further about drills we will let you know more information on drills we have used for different applications.