I been delaying this Hakko 981 tip replacement for some years now. Not that I don't have the spare, I do but I never thought the retaining sleeve would be stuck to the worn out tip too. I must have broken some soldering rules somewhere.
Both replaced and looks good as new (until you plug it in of course).
I was a Goot user before I switched to Hakko. Both are very good brand but in the real world, I measure a brand quality by the 5P, those are (PRICE, PERFORMANCE, PRACTICALITY, PERSEVERANCE and PARTS). Any company without those will be my last option.