5pc Screw Extractor Set For removing broken off bolts and screws. 5-piece set. Contains spiral flute screw extractor No. 1, 2, 3, 4, and 5 on display card with instructions. No. 1- Screw size: 3/32 to 5/32. No. 2- Screw size: 5/32 to 7/32. No. 3- Screw size: 7/32 to 9/32. No. 4- Screw size: 9/32 to 3/8 and 1/8 pipe. No. 5- Screw size: 3/8 to 5/8 and 1/4 pipe.