Retract-A-Bit Auto Advance. Never lose a bit again Have the right bit, right away with the Retract-A-Bit Auto Advance self storing multibit screwdriver. Change bits instantly with the push of a button, six of the most popular screwdriver bits extend from the handle via spring action. Safety Feature - Misfire in presence of object. Easy to reset the bits - Tap the base on a hard surface 3 times.