*Exceptional Load Capacity & Robust Build** Engineered with a heavy-duty mix of steel and a cast iron hub, this caster is built to endure intense workloads. A single unit boasts an impressive **800-1500 lbs load capacity**, making it ideal for the most demanding industrial applications. **Universal Compatibility & Easy Installation** Featuring a standard **4" x 4.5" top plate**, this caster can be easily mounted onto a vast array of equipment, from pallet jacks and platform trucks to furniture and workbenches, for both indoor and outdoor use. **Rigid Design for Stability** The **6-inch diameter and 2-inch width** rigid wheel provides excellent stability and is ideal for straight-line movement on carts, trailers, and platforms. Its design minimizes rolling resistance under heavy loads **Smooth Rolling & Long-Lasting Performance** A **¾” roller bearing** and **steel spanner bushing** ensure smooth 360-degree rotation. The maintenance-friendly **Zerk axle** (grease fitting) and **nylon lock nut** secure the wheel, reduce wear, and significantly extend service life. **Durable Materials for Extreme Conditions** The bright galvanized steel wheel offers superior abrasion and rust resistance. With an operational temperature range from **-50°F to 800°F**, it performs reliably in environments from deep freeze to high-heat settings. Caster SIZE: Industrial caster diameter: 4,5,6,8 inches, width: 2 inches, top plate: 4x 4-1/2,with Needle roller bearing, One caster wheel Load capacity is 800-1500lb,one set of 4 load Capacity will be 3200-6000LB