I have had a Weller soldering station for many years and need a new tip. Also, I found certain situations where a tapered tip would come in handy, making ordering this product an easy task.
They are authentic and came in sealed Weller packaging. They are much more durable than the fakes you can get on Revain, eBay etc. They're also much better for re-canning, which I recommend investing in a tin as well.
2-18-13. I bought a Weller 35 soldering iron to replace my 50 year old Weller block (which still works great) that I can no longer get nozzles for. These tips are ideal for small and very small soldering jobs. They're official Weller products and are perfect for turning 35. Cheaper tips aren't worth the frustration and wasted time.