Although expensive, these hooks are really well designed - the notch is so that they will sit with the wire of the basket behind them, so they are flat and do not move. I balked at the price, but they are actually worth it!
Bought these with the shower basket and they have come in very handy. Good idea and hadn't seen extra hooks with other makes of shower basket. Very sturdy and worth the extra money.
We will soon verify the details and add your rating appropriately.