High quality materials High quality nylon wheel + copper center shaft, they are anti-rust, corrosion resistant Set of 4 Shower Enclosure Casters 2 upper and 2 lower rollers Roller Accessories The roller is fixed in place with screws and covered with a screw cap, which makes it beautiful and easy to clean. Features Suit for flat sliding doors and curved sliding doors. Curved slide rollers do not have a buffer spring, you can adjust the position of the wheel by optimizing the screws. Rolling knob with Springs pad for secure mounting.
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