【Durable Zinc Alloy】Made of premium zinc alloy with corrosion-resistant chrome and gold-plated finish, these shower door rollers are designed for long life and reliability in high-humidity environments.【Easy Installation】Simplify the installation process with our easy-to-install shower door roller replacements. The adjustable upper pulley set ensures a secure installation with high load capacity, eliminating the risk of breakage or jamming.【Quiet Operation】Experience silent sliding with our noiseless shower door rollers, ensuring a peaceful bathroom experience without the annoyance of squeaking doors.【Universal】These 23mm diameter curved shower door rollers, the height of the upper wheel can be easily adjusted to 8mm using stainless steel screws, and the height of the lower wheel spring can be automatically adjusted according to the height of the upper wheel.【Wide Application】These rollers are suitable for a variety of bathroom environments, including showers, caravans, steam rooms, and massage rooms, providing a seamless opening and closing mechanism for your curved shower door.