Upgrade your chair, stool, or trolley with the OP-Tech Premium Roller Blade Caster. This high-quality replacement caster features a durable design that ensures smooth and effortless movement. Crafted with precision, this roller blade caster is the perfect choice for those looking to add functionality and style to their furniture. With a 3-inch diameter, this caster is perfect for a variety of uses and will fit seamlessly into your existing furniture. The OP-Tech Rollerblade Style Caster is designed to provide maximum comfort and support while being long-lasting. Trust in the quality of this roller blade caster to enhance your furniture's mobility and performance.