Designed to remove and easily replace the brake show retainer spring on trucksWorking on this tough torsion spring without this tool is a nasty "knuckle-busting" jobTool fits into a coil spring and provides good leverage to engage or disengage the hook arm of the spring with no difficultyOff set handle keeps clear of brake parts, and plastic handle is good for grip and comfortTool fits into a coil spring and provides good leverage to engage or disengage the hook arm of the spring with no difficulty Off set handle keeps clear of brake parts, and plastic handle is good for grip and comfort Made in America with a lifetime warranty