It pays to buy quality......

[phillpot]

The video in the advert (Gearbest on FB) shows these little chaps drilling and tapping in one go, using a cordless drill,

Not so sure I'd be that confident but reckon they could come in handy as thread restorers/cleaners, exhaust manifold threads in heads for example

[phillpot]

greymrj said:

Some clever new stuff out there.

Not so sure about the "new"