Get more power. Use Ryobi’s dual bladed trimmer head. It replaces string spools found on Ryobi’s cordless strimmers. It hacks at weeds and thick grasses that those flimsy strings cannot handle. With this two pack, you can work outside all weekend, frustration-free. To install, simply press the side buttons and push the accessory into the trimmer head. It automatically locks, ready to work as soon as you are. The product is ideal for the do-it-yourselfer interested in improving their landscaping around the house.