Driven by the Westwood lawn tractorメs power take-off, the Westwood power scarifierメs high-speed rotating tines tease out the unwanted thatch & moss, leaving behind the intact grass plant & simultaneously aerating the ground that helps to stimulate fresh growth. The Westwood powered grass collector can then be used to sweep unwanted material ready for the composter. The Westwood scarifier covers a full 76cm (30") width of lawn & has height adjustment for precise depth control.