Ultimaker 2 e3D V6 Adapter with Radial Fan Mount

You'll want to print this in ABS or PETG or some other high-temp material. It's also a good idea to cover the inside of the shroud with aluminium tape or foil to help reflect some of the heat.

I used M2 screws to attach the radial fans, and the standard e3d screws for the heatbreak fan.

The radial fans came from here: https://www.aliexpress.com/item/5pcs-lot-Gdstime-DC-12V-3cm-30mm-x-10mm-Ball-Brushless-Cooling-Fan-Air-Blower-Blow/32844290749.html - I asked for 24v fans in the comment section of my order, and that's what they sent me. Nice!

You'll also need a longish M3 screw to clamp the new hotend in place. I can't remember what length mine was, sorry!