More ergonomically comfortable, the unique design uses less material and resources while maintaining our highest quality standards. This human powered tool emits no greenhouse gasses, saves you money, and will provide a lifetime of dependable use. Unique design centers weight over cutting blade for easy edging. Creates deep, clean edges along sidewalks, driveways, gardens and lawns. Perfect for grooming around trees and shrubs or installing plastic edging. Yard Butler guarantees all Yard Butler tools for life against any defects in manufacturing or materials.