All in One Pruner - Knife or Tool Sharpener Sharpen all of your pruners, garden tools, and knives with one sharpener. Patented recess allows pruners and loppers to be sharpened without disassembly. Ergonomic design with built-in thumb rest for added control and accuracy. Manufactured with diamond sharpened carbide to provide years of service. Preset angles provide an exact edge every time.