Screw Extractor Set, Spiral Flute Type Screw Extractor and Drill Bit, Number of Parts 35, Drill Size 1/2 Inch, 1/4 Inch, 1/8 Inch, 11/32 Inch, 13/32 Inch, 15 /32 inch, 19/64 inch, 3/16 inch, 3/8 inch, 5/16 inch, 5/32 inch, 5/64 inch, 3/8 inch, 5/32 inch, 5/64 inch. ", 7/1 6 in, 7/32 in, 7/64 in, 9/32 in, for screw type socket, for screw size #3 to #12, 1/8 in to 3/8 in BSP, 1 /8 in to 3/8 in NPT, 3/32 in to 15/16 in, Material: machined carbon steel, plastic container type, unit size 1/2 in and 5/8 for multiline