Different from ordinary lawn mower/ grass cutter, Pavement Surface Grass Trimmer is specially designed to cut grass and brushes or trim off mosses for all kind of surfaces especially on hard surface such as asphalts, concrete, roads and pavements. Pavement Surface Grass Trimmer is made of high-quality steel, which enable it to perform sharply and high efficient, at the same time having stable performance. Stainless Steel brushes is heavy duty enough to withstand contacting with hard surfaces like pavements and concretes. *Pavement Surface Grass Trimmer works well in normal grass trimming too. Benefits: TIME SAVER : Can use in both lawn mowing and grass trimming on pavements without CHANGING the cutter. ENERGY SAVER : Save more than 50% of time in trimming grasses on pavement with high efficient heavy duty Stainless Steel trimmer. MONEY SAVER : Proven to last longer than any lawn mower's blade & cutter, high durability will cut down the cost of buying new one. Safety : Prevent getting injured due to shattering of mower's blade or even fatal death. Universal Use: Fits for all mower in the market.