Snow wrenches are extremely versatile and can be used as: bottle opener, can opener, screwdriver, Phillips screwdriver, safety hammer, hex key, etc. 18 functions: 1. 8 mm inner hexagon 2. 7 mm inner hexagon 3. 6 mm hexagon 4. 5 mm inner hexagon 5. Internal hexagon 4 mm 6. 3 mm inner hexagon 7. Flat blade screwdriver 8. Phillips screwdriver 9. Beer Bottle Opener 10. Outside hexagon 13 mm 11. Outside hexagon 12 mm 12. External hexagon 11 mm 13. Outside hexagon 10 mm 14. Outside hexagon 9 mm 15. External hexagon 8 mm 16.Hanging holes 17.Internal hexagon 16mm 18. External hexagon 14 mm