The kit comes with three hot air adapter (4mm, 6mm, and 8mm), perfect for the Quick 861DW or whatever hot air station that you use. The tip fits at the end of your existing nozzle allowing it to be used as a bent tip. Make sure that you increase the temperature on your hot air rework station with these nozzles.
This kit also comes with three very sharp x-acto tips for scraping the underfill around nand chips, tristar chips or whatever chips that have underfill that surround them. I would cut the bottom part in half, so that the blades are shorter giving you better access to the actual tip.