Echo SRM-3020Description: Make workdays more efficient and productive with the class leading SRM 3020 straight shaft string trimmer. Featuring lightweight construction, a Speed Feed 500 cutting head and a 20 in. cutting swath, it quickly powers through one job and onto the next. Top Features: 1. 62: 1 gear reduction for fast, efficient cutting Two stage air filtration system increases cleaning capability and allows for longer maintenance intervals 30. 5 cc