Description: Roller Diameter: 3/4 inch (approximately 19 mm), smooth operationProduct Application: Pocket door rollers assembly is suitable for doors and tracks with a height of 1-3/8 inches (approximately 35 mm) and an inner width of 1-1/8 inches (approximately 28 mm)Scope of Application: Sliding pocket door rollers assembly for RvFeatures: Sliding door wheels replace is made of quality metal and wear resistant PP to ensure strength in long term useQuality: Professionally manufactured, high performance, stable, and long service life Specification: Material: Iron PP materialProduct Size:5.7cmx1.9cm/2.24inchx0.75inch Size Chart: Package Includes: 1 Pocket Door Rollers Assembly2 Mounting Screws Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.