This guide wheel can be used with Gardena's ComfortCut and PowerCut grass trimmers, as well as the cordless ComfortCut Li, and is designed to assist with edging applications: just remove the plant guard and attach the guide wheel to the trimmer. Once mounted, you can guide the machine smoothly across the ground on the wheel. This means you don't have to strain your arms trying to hold the tool at a consistent height in order to cut a overhanging edge of your lawn. Especially when working for a long time, the Guide Wheel helps to minimize fatigue and ensure neat results. Compatible with the Following MachinesComfortCut 550/28ComfortCut Li-18/23PowerCut 650/28