Will remove most instrument screws that are .125” (3.15mm) in diameter or larger. Drill a #51 drill size hole into the center of the screw. Use a larger drill bit where the size of the screw allows. Insert the D110A or D110BScrew Extractor and remove the screw.
Available in 2 Sizes: D110A Small Screw Extractor for Cornet, Trumpet, Baritone, Saxes neck and lyre. D110B Medium Screw Extractor for Tuba, Sousaphone bell screws, Drums, etc.