The ‘tripping” action absorbs and dissipates the shock caused by obstructions saving wear and tear on the driver, tractor and plow. With bottom-trip blades, only the lower portion of the blade gives way so the entire load is not lost. Full-trip action provides maximum protection by enabling the whole blade to “trip” forward. For heavy snow or icy conditions bottom-trip moldboards are a popular choice. And all Meyer bottom-trip moldboards are available with a reversible cutting edge for longer wear-life.