They were placed correctly on the tile and locked in place by first pushing the disc in and then turning it clockwise as far as it would go. Bought a set of 2. I've picked them up off the floor in the shower at least 25 times since I received them around June 10th. Snapping means nothing if it loses suction......it goes down. I only stored light shower items in the hooks. Speaking of hooks, there is a wide ball at the beginning of the hooks, which is not suitable for some shower items. Only items on a robe or rope will hang slightly (but they'll fall down at least 3 times before your next shower). Look for something else as it's a "0" on a 0 to 10 rating scale.
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