I have a slightly older Ego 480CFM electric battery powered blower, and I wanted to use the fan tip from the newer 530cfm unit with mine. unfortunately, they don't fit... Until now! You will need 2 self tapping screws or rivets to install this, and it will require support to print the flat spot for the latch, but other than that, its print, stick on the end, secure with screws, clip on the accessory tip, and go. This should also fit the narrower but wider tip as well.
It's basically a Vase mode print.
Push plastics ABS
You only need support for the flat latch notch