Hey Rick,
For last 2 yrs been using Sy-Tools bit's off E-Bay in both 1/8 and 1/4" shank.....mainly because they have .25mmR bits for detail, BUT last order in January never showed up
E-Bay refunded my money....but really liked those bits! Sy-Tool isn't even showing up on E-Bay now?
Anyway....here's the info on the .25mmR 1/4" one.
Lucky I stocked up a little...now to find another supplier
Here's a supplier a friend uses, BUT he's snapped two tips of the .25mm, and in two yrs I never snapped 1, so NO personal experience with this link;
https://www.ebay.com/itm/Tapered-End...:Kj4AAOSwv4Fcq
scott