This is the original Bedknife Buddy, invented and manufactured by a golf course technician to help you maintain your greens mowers bedknives front face at the proper cutting angle. The Bedknife Buddy has a file insert (replaceable) that hones the bedknife at a -5 degree angle. Two guide pegs safely rotates the reel as you hone the front face of the bedknife. Just place the Bedknife Buddy flat against the bottom of the bedknife and stroke across the entire front face in one single motion. When used regularly, just a few strokes will keep your greens mower cutting perfectly. No need to remove the reel, and no complicated, expensive grinding equipment to setup. We are sure that you will agree that cleaner, finer edges can be achieved by honing with a file than grinding. Don’t let the low cost fool you, the Bedknife Buddy is manufactured from an extremely tough high tech plastic that will last a lifetime.