Screw Extractor, Straight Flute, #4

#4, straight flute screw extractor, designed for softer materials or thin walled pieces such as pipes & fittings, design eases extraction because it does not expand the material as you remove it, removes both left-hand & right-hand threaded parts, removes bolts & screws 1/2" - 9/16" & 1/4" npt, 12 mm-14 mm, 1/4" bsp, use 5/16" drill bit.