Heavy Duty Cam Action Suction Hook

A lot of tech bang for the buck.

From the website:

Suction Hook

This is a dramatic improvement over the unreliable hooks commonly available.

Its cam mechanism provides a surprising amount of suction, firmly attaching it to any smooth, non-porous surface, such as glass, tile, metal or plastic, and allows you to release and reposition it easily — but only when you want to!

Though originally developed for use in bathrooms, it is equally useful in kitchens, laundry rooms, offices, workshops, or anywhere storage is needed and you have a suitably smooth surface.

Made in France, the hook is 2" long and has a 3" projection.

Weight capacity is 22 lb (10kg).

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$2.50.