The Draper Expert 1/2" Drive Brake Caliper Wind Back Tool is a professional piston retraction tool designed for efficient brake pad replacement and calliper servicing work. This specialist brake service tool ensures parallel piston retraction, protecting delicate piston seals from damage during brake maintenance. The 1/2" square drive fitting allows direct connection to a ratchet or breaker bar, providing controlled leverage for smooth piston compression. It's specifically designed for use on opposed fixed callipers and single piston sliding callipers that don't feature integrated wind-back mechanisms. Ideal for professional mechanics and technicians working on disc brake systems, this tool simplifies brake pad replacement by retracting pistons safely and evenly. The parallel retraction action prevents seal distortion and calliper damage, helping to maintain braking performance and avoid costly comebacks. Features and Benefits: • Ensures parallel piston retraction avoiding damage to the piston seals • For use on opposed fixed and single piston sliding callipers without wind-back mechanisms Contents: • 1 x Piston Retraction Tool, 1/2" Sq. Dr.