"GREAT FOR CARRYING PLANTS!"
I've had plastics car hooks up to now but the hooks that fit round the head rests tend to break, these metal ones are great. Apart from hanging the obvious bags of shopping up, they're brilliant for transporting plants from the garden centre. Hang your plants in a carrier bag from the hooks and instead of being crushed from falling over on the floor, they just swing to and fro with the movement of the car = no more squashed plants!