The Tondu lawn dethatcher has a 40 inch / 102cm working width, 7 inch rubber tyres & is fitted with 20 spring tines for dethatching. You can attach the dethatcher with the hitch pin supplied to a ride on lawn mower or garden tractor. Dethatching is very useful for removing dead moss & thatch from your lawn promoting healthier grass growth. Manufacturer's 1 Year Domestic Warranty