[tomfree]

Originally Posted by Chopper Dropper

Most if not all 2015 + helmets from the usual makes will have the anchors already installed, if not installed I believe the holes are already there, no special tools.
Dirk

I am 99.999% sure that H&N anchors were part of the SA 2015 standard, so you don't have to drill any 2015 or 2020 helmet.

I've already swapped over the HANS attachment to my new SA2020 helmet. It's a breeze. 5 min top to install, and most of that is finding the right size hex bit in the toolbox.