Abstract: A hand tool for use in servicing automotive-type disc brakes, and particularly for retracting the brake piston into its associated caliper. The hand tool include a pair of spreader plates which have a first position in which they are closely proximate one another, and a second position in which they are spread sufficiently to force a brake piston into its caliper body. The spreader plates have extended portions which are shaped and sized to extend into the caliper in the place of the disc pads which normally reside in the caliper. A hydraulic actuator interconnects the spreader plates, and is operated by a trigger-like mechanism. In operation the extended portions of the spreader plates are inserted into the caliper, and the trigger operated to drive a movable plate with respect to a fixed plate, utilizing the force of the hydraulic cylinder to spread the plates and thereby force the brake piston back into its caliper.