The Echo SRM-520ES/U is designed to tackle the largest scale commercial jobs. That's why it features a huge 50.2cm³ engine, a heavy-duty air filter and an advanced vibration reduction system. Whether you're working with a trimmer head or blade, you can depend on its power to get through the job with ease. The Echo SRM-520ES/U features an incredibly powerful 50.2cm³ professional grade engine for serious clearing power. A super anti vibration feature that utilises a 4-point mounting system ensures low vibrations so you can power through jobs in comfort. Featuring Echo's patented ES start technology for easy starting every time and a heavy-duty air filter to protect against dust and debris. Every feature has been carefully crafted to reduce downtime and get you from one job to the next, hassle free.