Can anyone tell me if these work?

[WaterTight]

And aren't hard/annoyin to use?

Need to do a one off 52mm hole and don't fancy spunking out for a 52mm tile bit for it.

Adjustable Hole Drill | Tile Hole Drill Bit | Tile Drill Bit

 

[Chalked]

Only on soft ceramics.

 

[WaterTight]

thanks. bit the bullet and got a whole new set in end. it's christmas afterall.

 

[Deleted member 7121]

Got bits from 365 last week to drill a marble top , done the job with no problems.

 

[Leo21]

And aren't hard/annoyin to use?

Need to do a one off 52mm hole and don't fancy spunking out for a 52mm tile bit for it.

Adjustable Hole Drill | Tile Hole Drill Bit | Tile Drill Bit

I wouldn't spunk out for a 52 mm either.