Ball bearing size for Deore XT Headset HP-M736 1 1/8

[Tsundere]

These came with caged bearings but i have one with none, I've switched out caged bearings for loose bearings before with no issue so I assume it's OK to do that with these headsets too, just wondering what size/s ball bearings I'll need for top and bottom.

 

[TreaderSteve]

Scroll down on this - looks like 1/4" - bigguns! https://www.retrobike.co.uk/gallery2/d/117073-2/scan0001.pdf