Double-sided design: Double-sided hook, 2 pieces are equivalent to 8 hooks, which can provide more storage space. Extended length (7inch/17.8cm) Easy to install: No drilling or glue required. Simply attach the hook to a frameless shower door less than 10mm thick. Never fall off and can be moved at any time. Please note: Only for frameless showers, not for framed showers. Anti-scratch & Anti-slip & Low noise: The top and bottom of the hook are equipped with a rubber protective layer, which effectively prevents the hook from slipping or scratching, as well as reducing noise and creating a quieter experience.