DIY Lords, I'm looking for some nut drivers (I think that's

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DIY Lords,

I'm looking for some nut drivers (I think that's how they're commonly referred now), I've known them as tek bits also.

Basically 1/4 bits for an impact driver, for hex headed screws.

I have many that are magnetic, a little magnet in the centre of the bit to retain the screw.

I had one that I'd like to replace, it was in my drill case when it was stolen. It didn't have a magnet and was for stainless steel screws, it basically had a metal ring around the outside that acted like a spring clip to hold the screw in the bit, I can't remember where I got it from and I've tried all kinds of search terms on google and I can only find the magnetic type nut drivers.

Can anyone help me find what I'm looking for? I'd imagine commercial roofers and cladders are more likely to come across them, and metal workers alike.