Enhance your workspace with these premium replacement casters designed specifically for hardwood and other hard flooring surfaces. Soft Tread for Hard Surfaces: Hard floor casters feature soft treads that roll smoothly and quietly over hard surfaces without causing damage. Self-Braking (65mm Hard Floor Only): Adds resistance when the chair is empty, but rolls smoothly when weight is applied. Smooth & Quiet Rolling: Glide effortlessly over hard flooring without noise. Heavy-Duty & Durable: High-quality construction supports a minimum of 550lbs, perfect for heavy-duty use. Universal Fit: Compatible with most office chairs; easy, tool-free installation in just minutes. Set of 5 Casters Included: Upgrade your entire chair for enhanced mobility and comfort.