ECHO SRM-3020T Trimmer When the job requires long days, tall grass, and high temperatures, the high-torque SRM-3020T straight-shaft string trimmer is the perfect option. Features Has a 30.5 cc professional-grade, two-stroke engine that delivers 1.8 hp for superior performance and durability Has a 2:1 high torque gear ratio to push through tough overgrown grass and weeds Has hand grips made of rubber in the front and rear that provide extreme user comfort Has a tool-free air filtration system for simple and convenient in-field servicing Its two-stage air filtration system enhances cleaning efficiency and allows for longer maintenance intervals Uses a Speed-Feed® 500 head that reloads in seconds without disassembling Has a large fuel tank (24.0 fl. oz.), which increases run time between fill-ups Its bellows-style fuel transfer system allows for easy starting, especially for re-starts in hot, dusty environments Its flex cable drive offers optimal performance and low vibration