Garden Tool Sharpener -$11.95- Get a better-than-new edge Throw away the whetstone. These sharpeners safely and quickly hone all sorts of blades. V-shaped tungsten groove guides blade at correct angle—ensures efficient sharpening. Garden Tool Sharpener works great on garden tools and lawn mower blades. All feature durable plastic construction and a finger guard. Lifetime Warranty. Made in the USA.