The snow keys are extremely versatile and can be used as: bottle opener, opener, screwdriver, cruciform screwdriver, safety hammer, hex key, etc. 18 functions: 1. Interior hexagon 8 mm 2. Inner hexagon 7 mm 3. Hexagon 6 mm 4. Inner hexagon 5 mm 5. Inner hexagon 4 mm 6. Hexagon interior 3 mm 7. Flat blade screwdriver 8. Phillips screwdriver 9. Beer bottle opener 10. Hexagon outer 13 mm 11. Exterior hexagon 12 mm 12. Hexagon Exterior 11 mm 13. Hexagon outside 10 mm 14. Hexagon outside 9 mm 15. Exterior hexagon 8 mm 16.trous hanging 17.Hexagon Interior 16mm 18. Exterior hexagon 14 mm