Echo 56V Pro Attachment System DPAS-2100SB is lightweight and can be used with up to 15 various Echo approved attachments. The brushless motor delivers superior power and performance while the tool-less coupler provides fast and effortless attachment changes. This Pro Attachment System includes a 16-inch trimmer attachment and is pre-loaded with Echo .095-inch Silentwist line. The Speed-Feed 400 cutting head delivers professional bump-to-advance trimming.