Finger bits are the primary tool for cutting sink holes, custom cutouts, and radius corners in stone countertops — work that requires a plunge cut followed by an interior routing path that a straight blade can't make. In a CNC stone machine, finger bits execute the programmed sink cutout path automatically; for hand-held router work, they're guided by a template. 

The collection includes finger bits for undermount and drop-in sink cutouts, cooktop cutouts, and custom interior cuts in granite, marble, quartzite, and engineered stone. Profile finger bits add an edge profile to the cutout rim as they cut — producing a finished undermount edge in a single operation. 

All finger bits feature standard router and CNC shank configurations. For complete CNC tooling see CNC Tooling. For bowl work and curved interior profiling see Bowl Cutting & Polishing.