The lawnmower blade that "Cuts itself sharp"High-quality, hardened steel blades equipped with the LaserEdge Eversharp technology on their cutting edges have demonstrated their toughness and durability in field tests, even in the most abrasive conditions.In one test, the LaserEdge Eversharp cutting edge withstood 30 hours in severe sand conditions and became sharper during use. In a highly controlled durability test, the blade's advanced technology performed remarkably, enduring multiple impacts from a 1-inch steel stake traveling at more than 200 mph.