Correct screwdriver sizes for Oyster and Jubilee bracelets please

[PeterT]

Hi,
After having a bit of a break from watches, my interest is back after going with my son last Sunday to pick up a Tudor Black Bay Harrods edition from the shop in London.

I have always used the Screwdriver from my SD (ref - 2100) to adjust the Oyster bracelets of my Rolex Sports watches.
However, my wife has a DJ on a Jubilee and to the SD driver is too big and she could do with a link taking out.

I have a good set of Bergeon screwdrivers but now realise that I need the hollow ground or parallel blades if I am to avoid any screw head damage.
I think I am correct in needing a 1.6mm blade for the Oyster but I am not sure about the blade size for the Jubilee.
Please can you confirm the Oyster and Jubilee blades sizes for me? Also, do all Jubilee screw heads have the same size slot?
Thank you,

Peter

[Fredrik]

I do believe the newer oyster bracelet need a 1.7mm blade, but it is 1.6mm for the older. I use 1.6mm for 93150 and 78360 bracelets.

For modern jubilee I _think_ it is 1.3mm, I need one as well and I'm just looking into it.

[PeterT]

Thanks Fredrik for yout thoughts.
Can anyone confirm as I had not thought about 1.7mm?

[joli160]

1.6 hollow ground

[Sirschwag]

I have the Rolex 2100, it’s the best for Oyster and fits perfect on a 93150. It’s 1.7mm I believe. Horofix makes 2 versions of the Rolex tool, both come with a 1.7mm for Oyster and 1.3mm for jubilee. The 1.3mm was a perfect fit on a modern jubilee, but it was a little too thick (@ .25mm) on a late 80’s 62510 jubilee screw head. You could file down the blade thickness for a perfect fit or buy a 1.4mm blade and file the edges on a hollow ground, but they are only .125 thickness I think, so a little thin.

[PeterT]

Originally Posted by Sirschwag

I have the Rolex 2100, it’s the best for Oyster and fits perfect on a 93150. It’s 1.7mm I believe. Horofix makes 2 versions of the Rolex tool, both come with a 1.7mm for Oyster and 1.3mm for jubilee. The 1.3mm was a perfect fit on a modern jubilee, but it was a little too thick (@ .25mm) on a late 80’s 62510 jubilee screw head. You could file down the blade thickness for a perfect fit or buy a 1.4mm blade and file the edges on a hollow ground, but they are only .125 thickness I think, so a little thin.

This is great information. I saw that there are 2 versions of the Horofix tool. Which is the best one for reliable screwdriver action?
Has anyone had a bad experience with the Horofix tools? The good news is that they will ship to the U.K.

[Sirschwag]

I have the 2100 clone (the dual sided one), but think the single tip version as shown above is a better design. I ordered some other 1.3mm blades to try on my older jubilee. Will report back