Review on Upgrade Your Worx Weed Eater With THTEN Edger Spools And Cover - 10 Spool 10Ft Refills Of 0.065" String - Compatible With WG180 WG163 WA0010 WA6531 GT by Jill Weingartner

They looked similar except the plastic was darker. But looking at them appeared to be the same and I've replaced dozens over the years. Finally exhausted my original factory supply. You get free replacements from Worx but the hassle of getting in touch with them was a pain. Saw these and felt they were well worth it and the cost for the was low. They went in perfectly, line installs exactly the same and they work fine - self feed, 1-reel lasted just as long etc. No difference in installation, work or use. Identical.