3 Piece Sewing Machine Screwdriver Set by Nifty Notions Item 7715
3 different size screwdrivers specifically designed for sewing machines and sergers. There is one designed for removing the machine's top and side covers. Also one short screwdriver designed to make removing the machine's needle plate a breeze. And one small screwdriver that is just the right size for adjusting your machine's bobbin case tension.