Drill Hog® Jumbo 10 Pc Spiral Easy Out Set (Screw Extractors) Includes: 10 Pc Spiral (Round) Easy Outs (Screw Extractors) Sizes: Number #1 Removes Screws 3/32″ to 5/32″ (Use 5/64″ Drill Bit) Number #2 Removes Screws 5/32″ to 7/32″ (Use 7/64″ Drill Bit) Number #3 Removes Screws 7/32″ to 9/32″ (Use 5/32″ Drill Bit) Number #4 Removes Screws 9/32″ to 3/8″ & 1/8″ Pipe (Use 1/4″ Drill Bit) Number #5 Removes Screws 3/8″ to 5/8″ & 1/4″ Pipe (Use 19/64″ Drill Bit) Number #6 Removes Screws 5/8″ to 7/8″ & 3/8″ Pipe (Use 13/32″ Drill Bit) Number #7 Removes Screws 7/8″ to 1″ & 1/2″ Pipe (Use 1/2″ Drill Bit) Number #8 Removes Screws 1″ to 1-1/2″ & 3/4″ Pipe (Use 5/8″ Drill Bit) Number #9 Removes Screws 1-1/2″ to 2″ & 1″ Pipe (Use 1″ Drill Bit) Number #10 Removes Screws 2-1/8″ to 2-1/2″ & 1-1/4″ Pipe (Use 1-5/16 Drill Bit). These extractors are made from Cobalt which has a melting point of 2,723° Fahrenheit! These screw extractors are perfect for removing stubborn bolts, screws, and studs.