Abstract: A frog for a stringed instrument bow is disclosed which has a hollow metal body, which may be made, for example, of direct laser metal sintered titanium. The hollow body has a top side adapted to engage a bow stick of the stringed instrument bow, and a bottom side adapted to support a hair bundle of the stringed instrument bow. A back stop is positioned proximate the bottom side in the interior of the hollow metal body and a cam attached to the bottom side of the hollow metal body is adapted to slide or rotate with respect to the hollow metal body, from an open position in which a hair bundle can be inserted in the hollow metal body and a closed position in which the cam forms a pinch point with the back stop to secure the hair bundle.