Name for "those" bits

[F Murtz]

What it the name that ebay likes for those sidecutting drill bits used in the newfangled router like machines sold as saws that plunge cut then proceed to cut sideways

[Periproct]

Keyhole?

[meow2222]

rotozip

NT

[fred]

In article , F Murtz writes

Milling drill appears popular in the real world.

Ebay seems to prefer drill saw, eg:

Drill bearing f'cker is what you call them if you use them too much, take care.

[F Murtz]

That is the sort but it is a propriety name of an expensive brand, I was hoping for a generic name, but maybe ebay does not have the cheaper version or if so the descriptive name eludes me.

[Andy Burns]

rotozip?

[Andy Burns]

spiral saw?

[meow2222]

Yep

NT