The first knife did not last very long. After complaints was made an exchange. These knives have different weights and were quickly dull; the mowing catastrophic, not comparable to the original diameter. Complained again. Knife sent on the same day to suppliers, immediate replacement was previously pledged phone. After TK 3 days before the knife should be shipped the same. To date, received any replacement knife. Knife and service bad, worse That's the Limit !!!