What drill bit for marble?

[raymak]

 Mounting a  grip rail on shower wall. what is the best  drill bit for marble ?

[MitchellMc]

Welcome to the Bunnings Workshop community @raymak. It's brilliant to have you join us, and many thanks for your question about drilling into marble.

You'll need to use a diamond drill bit for marble, as carbide bits are not tough enough. Remember to drill at a slow-medium speed, never full speed, and to cool the drill bit with constantly flowing water as you drill.

Remember your PPE including safety glasses and a respirator.

Please let me know if you have any questions.

Mitchell