The Precision Blade Sharpener quickly sharpens your Hydrofarm Precision Pruners and all similarly-sized pruners to original sharpness with a few easy strokes. With its ceramic stone inserts, non-slip base, and comfortable ergonomic rubber grip, it makes the sharpening process nearly effortless. Works with all popular pruner brands (not compatible with bypass pruners). Also includes a bonus built-in all-purpose knife sharpener.