3-Inch Full Black Swivel Caster with Double Ball Bearings and Blue-White Zinc-Plated Bracket Smooth Mobility • Durable Construction • Corrosion-Resistant Finish • OEM Customization The 3-inch full black swivel caster is designed for machinery, industrial equipment, and mobile applications requiring smooth movement and reliable daily performance. Featuring a black caster wheel, double ball bearings, and a blue-white zinc-plated metal bracket, this caster combines flexible