: Material: Copper + POM wheel Roller outer diameter: 27mm Inner hole: 5mm M4 screw can be used Pulley bearing capacity, good stability; Small friction coefficient, good mute effect. Easy installation, often used for bathroom glass sliding door pulley/sliding track. Package include: 4pcs shower door roller 4pcs M4 stainless steel screws Note:Please measure the dimensions for better installation before purchase.
