✓ 1 a bottle opener (for traditional glass bottles),
✓ 2 a screw-top opener (for plastic screw-top bottles),
✓ 3 a pull tab hook (for pull tabs, e.g. tin of cat food),
✓ 4 a pop tab hook (for pop tabs, e.g. soda cans),
✓ 5 a "jar hook" that breaks the container's vacuum-seal, making the lid effortless to twist off.