
| Extractor Size | Use to Remove These Screws and Bolts | Pre-Drill |
| #1 Spiral | 1/8”- 1/4”, 3mm - 6mm | 5/64" |
| #2Spiral | 1/4”- 5/16", 6mm - 8mm | 7/64" |
| #3 Spiral | 5/16”- 7/16", 8mm - 11mm | 5/32" |
| #4 Spiral | 7/16”- 9/16”, 11mm - 14mm | 1/4" |
| #5 Spiral | 9/16”- 3/4”, 14mm -18 mm | 19/64" |
| #6 Spiral | 3/4”- 1", 18mm - 25mm | 13/32" |
| #7 Spiral | 1”- 1-1/8”, 25 mm - 28mm | 17/32" |
| #8 Spiral | 1-1/8"- 1-1/4", 28mm - 32mm | 13/16" |
| #9 Spiral | 1-1/16"- 1-7/16”. 27mm - 36mm | 1-1/16" |