Certification : NONEOrigin : Mainland ChinaType : Window RollersModel Number : bathroom pulleyProduct Name: High Quality Shower Door RollerProduct features:The pulley is made of copper + POM wheel, and the screw is made of stainless steel, which is corrosion-resistant, rust-proof and has good overall performance. The pulley has strong bearing capacity and good stability; the friction coefficient is small and the mute effect is good. Easy to install, often used for bathroom glass sliding door pulleys/slides.Roller diameter: 19mm, 23mm, 25mm, 27mmRoller inner hole: 4mm, fixed with M4 screws.19mm wheel thickness: 4.8mm, 23mm wheel thickness: 5.8mm,25mm wheel thickness: 5.8mm, 27mm wheel thickness: 5.8mm,Comes with screws, suitable for 4-6mm thick shower doors.Package Included:4pcs 19mm bathroom pulley or4pcs 23mm bathroom pulley or4pcs 25mm bathroom pulley or4pcs 27mm bathroom pulley