Most of the Hakko 900 Series Tips are obsolete, and replaced with the T18 Series Tips. Production Automation still has 900 Series tips in-stock and on our site, we will be phasing them out as we deplete our stock. The 900 Series are interchangeable with the T18 tips, you can view a Cross Reference Sheet here: T18 CROSS REFERENCE SHEET
Hakko T18 Series Soldering Tips have replaced the now discontinued 900 Series tips.
A majority of Hakko 900 Series soldering tips have been discontinued and replaced with the T18 Series tips. Hakko is continuing to manufacture and sell SIX styles of 900 series tips that have no T18 cross reference.