#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.
