Features： 1、Double Bearings: The swivel caster wheel has built in double bearings, the wheel core is in the center, with stable rotation. 2、Cast Iron: Made of cast iron material, with high hardness, wear resistance and long service life. 3、Stable Structure: Widened and thickened design, load bearing and more labor saving, there will be no unevenness of the equipment. 4、Standard Size: The mounting height of the casters is 97mm, with standard openings, quick and convenient installation. 5、Wide Applications: Rubber caster wheel diameter is 3in, often used for replacement of wheels on household cars or trolleys. Specification： Item Type: Swivel Caster Wheel Product Material: Cast iron Plate Size: Approx. 64 x 94mm / 2.5 x 3.7in Wheel Diameter: Approx. 74mm / 3in Wheel Width: Approx. 28mm / 1.1in Installation Height: Approx. 97mm / 3.8in Product Color: Black Use Scenarios: Airports, hotels, warehouses, trolleys Package List： 1 x Swivel Caster Wheel