The Nicolai Engraving Bit for Marble is perfect for engraving and lettering stone. Featuring a 10mm shank bored for inner water flow, it operates at 8000–10,000 RPM with a feed rate of 150–250mm/min. With a recommended depth of 1mm (maximum 3mm), it requires the Nicolai Blind Drill Adaptor 10mm to 1/2 Gas.
