Twist Drivers Lift out the tooth by driving the root tip out. Developed by our Chief Production Engineer, you can use these to literally \"screw the root tips out\" with ease. Foor come in a set of Left, Right Straight, and Left, Right Posterior. By using a twisting, screw driving, motion, less effort is spent pushing down into scket, and more effort is utilized on accuracy, so you can truly see what you\'re feelling. You will also be breaking off less root-tips.