4 Sets Shower Door Rollers Runners Wheels Replacement Part Bathroom Glass Door Description \nMaterial: Copper + POM wheel\nRoller outer diameter:19mm\nInner hole:4mm\nM4 screw can be used\nPulley bearing capacity, good stability; Small friction coefficient, good mute effect.\nEasy installation, often used for bathroom glass sliding door pulley/sliding track.\nPackage include:\n4pcs shower door roller\n4pcs M4x12mm stainless steel screws\n\nNote:Please measure the dimensions for better installation before purchase.\nFeatures: \n\n--Type: 4pcs shower door roller. Wheel thickness :5mm, comes with screws, suitable for 4-6mm thick shower door.\n--Roller diameter: 19mm, Inner hole: 4mm, fixed with M4 screw.\n--The pulley is made of copper +POM wheel, and the screw is made of stainless steel,corrosion resistance and rust resistance,it has good comprehensive performance.\n--Pulley bearing capacity, good stability; Small friction coefficient, good mute effect.\n--Easy installation, often usedy