On Wednesday, May 12, 2021 at 3:25:40 PM UTC+1, whisky-dave wrote:
Used to see this on sale but can't find any suitable for holding standard twist drills from about 1mm to 4mm, 5mm if possible.

Mostly for use as a 'spot face cutter' for stripboard but would be handy for drilling and enlarging holes in thin ply wood and acrylic plastics up to 3mm thick, as most are pretty crap the vero ones are £12 each and just with a 3.5mm bit.

Maybe I'm using the wrong search terms as we have one it has a clutch type mechanism like a proper drill bit holder but designed be used by hand and has a bar attached like vices do for ease of use.

Need around 50 of them depending on price.

Sounds like you need whats called a pin vice, it will certainly hold small drills whether it will go up to 3.5 is another matter. Modellers use small drill holders based on the Archimedes model, may be a trawl round some model making websites might come up with something.

Richard