Disclaimer: The image is for reference purposes only. Please read the user manual thoroughly before operating the machine. The B+BTec Diamond3 FB750W Tile and Stone Drill System delivers high-speed drilling performance, capable of drilling up to 300 holes in ceramic tile and natural stone when paired with B+BTec Thin-Wall Tile Bits. Features Made in the Netherlands Superior Drilling Speed & Precision Bit Life 300+ Holes Accurate Chip Free cutting of the Hardest Tile & Stone For Wet Use with Premium Thin-Wall Diamond Tile Bits up to 2-5/8" 3000-10000rpm variable speed motor Adjustable speed dial Includes Diamond3® FB750W Tile Drill GFCI Switch Adjustable Drilling Guide Water Supply Tank Ergonomic Side Grip Carrying Case Operating Manual Use the table below to select the RPM for your drill bit diameter, then start the machine. (Note the these may vary with the different materials you are drilling) Bit Diameter SuggestedDial Position 1/4" - 3/8" (Pos. 4/5) 1/2" - 11/16" (Pos. 4) 3/4" - 1" (Pos. 3/4) 1-3/8" - 1-1/2" (Pos. 3) 1-3/4" - 2-5/8" (Pos. 2/3)