1、Silent Polyester: Using high quality silent polyester materials, has high mechanical strength, shock absorption, wear resistance, and no damage to the floor. 2、Stainless Steel Bracket: The bracket of this directional wheel is made of stainless steel, which can prevent corrosion and rust. 3、Double Ball Bearings: Double ball bearings with embedded double ball bearings, double ball accuracy bearings with supporting steel sleeves, making the wheels rolling silently and smoothly. 4、Application: This is a directional wheel suitable for small machinery, trolleys, furniture and shelves, etc. 5、Usage Scenario: This is a directional wheel, which widely used for airports, hotels, warehouses, etc. 1 x Directional Wheel  Item Type: Rigid CastersWheel Material: PolyesterWheel Diameter: Approx. 63mm / 2.48inWheel Width: Approx. 31mm / 1.22inPlate Size: Approx. 64 x 93mm / 2.52 x 3.66inUse Scenarios: for Airports, Hotels, Warehouses, Trolleys