HIGH QUALITY: High quality POM plastic. Adapt to different types of showers. Make sure your door slides more comfortably No stress, no wasted money: You bought a sliding system and it broke? You think in horror that now you have to buy a new one. forget ! There are replacement shower door rollers for any sliding system in your home. If you have trouble sliding your shower door, use this quick fix and don't waste your money Wide Range of Uses: Shower Door Slides for Enclosures showers, massage rooms, bathtubs, jacuzzi and even furniture accessories. Make sure the door opens easily and smoothly. Replace the damaged system. High-end shower roller Rolling components: doors roll smoothly, shower enclosures can be easily moved forward or backward, whirlpool cabins clearly fulfill the tasks that are assigned to them, distribute the mass of glass, control the movement in a given direction. This makes the product more durable and lasts longer. Type: 4 rollers for shower doors. Wheel thickness: 5mm. Comes with screws. Suitable for shower doors 4-6mm thick. Roller diameter: 20mm, inner hole 6mm, fixed with M6 screws. The pulley is copper + POM wheel and the screw is stainless steel. Steel is corrosion resistant, rustproof and has good overall performance. The pulley has strong bearing capacity, good stability, small friction coefficient and good mute effect. Easy to install, often used in bathroom sliding glass door pulleys.