The brush cutter replacement trimmer head is a durable blade trimmer head with metal blades designed to cut through heavy brush and thick vegetation. The head is made from carefully crafted glass-filled nylon for superior durability and abrasion resistance, it can withstand the extreme demand of any job. The powerful serrated metal edges on the blades allow you to cut through the thickest weeds with ease. That means cutting more with less downtime to get the job done faster, leaving you more time to do the things you want.