A stump grinder is a specialised power tool used to remove the remaining tree stump and some roots after a tree has been cut down. These machines are equipped with a high-speed rotating cutting disk fitted with teeth or blades, which effectively grind the stump into small wood chips or mulch. Tree shear blades are hydraulic-powered cutting attachments, typically fixed to excavators or similar heavy machinery, that cut trees and woody vegetation with a mechanical slicing action.