#4 square flute screw extractor. removes bolt or screw size 1/2"-9/16". removes pipe 1/4". use drill size 5/16", left hand cobalt drill bit suggested. aggressively removes bolts and screws. screw extractors are used when a screw or bolt has broken off while still in the fastening hole.

• Easily removes 1/2-Inch to 9/16-Inch broken bolts and screws, removes 1/8" pipe
• Use 5/16-Inch left handed drill bit to drill hole this will help loosed bit
• Ideal for thin wall extractions
• Will not spread the wall as it extracts