Cibie, as
@discool eludes to are a well respected vehicle lighting manufacturer.
If you do decide to use them, fit them as a pair (obviously) and trigger them off the headlight main beam circuit through a relay. You can use an additional pair of "driving lights" in conjunction with your main beam headlights quite legally, as long as they are switched off,
preferably automatically when you're driving with your dipped headlights in use.