The Performance Tool Impact Driver & Extractor Set is ideal for loosening or removing firmly tightened or rusted screws or bolts. Convenient ¼ receiver allows use of any ¼ bit tip or hex nut driver.Features Phillips sizes: #1 & #2 Extractor sizes #1 1/8 15/16 #215/16-5/16 and #35/16-7/16. #1 Spiral 3/32"- 5/32", 2.5mm-4mm. No.3- No.5. #2 Spiral 5/32"- 7/32", 4mm-6mm No.6- No.12. #3 Spiral 7/32"- 9/32", 6mm-8mm. Slotted size 3/16Specifications Quantity: 7 Piece