When picking a lock in the wrong direction (intentionally or by error) the Flip-It™ will flip the cylinder plug past the upper pins and save you the job of re-picking. It also works equally well on disc tumbler locks. The 2-Pin Quick Lock/Release feature allows for easy release of the rotating action. The sure stop feature prevents over-winding in either direction. The ergonomic design of the knurled knobs makes it easy to pre-load the tool's spring action. Once the Spring action is set, the Flip-It will flip the cylinder plug with the push of a thumb.