•Made of high quality nylon and zinc alloy, this shower door pulley is durable. •Wear-resistant nylon rollers and ball bearings make it easy to use. p> •Contains 4 shower screen pulleys, 2 upper pulleys and 2 lower pulleys. •The upper roller is without spring and can be adjusted by rotating the screw. •The bottom roller has a built-in buffer spring to fix the inside of the card slot. •The diameter of the roller is about 23mm, suitable for glass doors with a thickness of about 4-8mm. •For better installation, the diameter of the glass opening should be greater than 12mm. < p>•The distance between the upper wheel opening and the top of the glass is less than 12mm.< /p> •A shower door requires 4 rollers, it is recommended to replace them in pairs.< /p> •When installing, first install the upper roller, then install the lower roller. < img src="https://m.media-amazon.com/images/S /aplus-media-library-service-media/17aed621-add8-4df0-9cf3-4fddc113d292.
