Echo 99944200540 Straight Shaft Trimmer Attachment Genuine OEM Echo Part The ECHO PAS Straight Shaft Attachment for String Trimmers is built for use with 0.095 in. diameter line. The straight-shaft attachment features bump-style head design Can be converted to metal blade brush cutting attachment with optional kit Cuts up to a 17" swath; Speed-Feed 400 head For use with PAS-225/230/231/260/261/265/266/280, SRM-210SB/211SB/225SB