From the Manufacturer Fast, safe, easy-to-use patented magnetic design
holds knives at the correct protrusion (+/- .002 inches) and parallel to
outside cutterhead surface for accurate, fast knife adjustment or
replacement in just 10 minutes. Can prolong the life of planer and
jointer knives as much as 5 times.
Features:
Fast, safe, easy
to use
Patented
magnetic design holds knives in correct alignment for easy
installation
Accurate, faster
knife adjustment or replacement for less down time