The gas powered ECHO GT-225L weed trimmer features a 21.2 cc professional-grade, 2-stroke engine for outstanding performance. It features a 55 in. shaft length 7 in. less than the GT-225 weed wacker model. The Speed-Feed 400 cutting head reloads in seconds without disassembly, making it easy to give lawns a manicured look efficiently and quickly. All ECHO yard trimmer engines are certified with the highest EPA engine durability rating.