I've said it before, and I'll say it again...
expressmowerparts.com -- I get all my blades... $9.95 vs 16.00 at dealers, 10 lb spool of .105 Oregon Square line...I think like $36...Speed Feed Heads, both large and small...they've been REALLY good to me for 5 years, and I go thru a LOT of blades and string. When it's dry, I'll literally wear the end OFF the blades before I finish ONE of my cemeteries...sand, sand, sand....did I say SAND? If I need it, and they stock it, I get it from them, hands down. Just my 2-cents. Check 'em out. 3rd day on my porch from Florida.