How long do cutting teeth last?

Stump grinder teeth have 3 cutting surfaces and can be indexed twice prior to sharpening or replacing. Depending on the type, age, and cleanliness of the area surrounding the stump, Stump Grinder teeth will work well for 5-15 hours before needing to be indexed. Rocks, sand, and other foreign debris in and around the stump can reduce the life of the teeth.  Teeth kits that are better suited for rocky, sandy, and clay soils are available. See Accessories.