General description The Mophorn 28-Inch Replacement Base for Office Chairs is a durable and stylish upgrade designed to give your office chair a fresh start. Crafted with a classic five-star design and built from high-quality materials, this replacement base offers stability and support, making it suitable for most office chairs. The installation process is effortless, with all necessary parts included, allowing you to renew the life of your chair quickly. Technical specifications Product Weight: 3.0 kg (6.6 lbs) Max Static Load Capacity: 1134 kg (2500 lbs) Max Dynamic Load Capacity: 136 kg (300 lbs) Product Height: 100 mm (4 in) Product Outer Diameter: Φ710 mm (Φ28 in) Installation Center Hole: 50 mm (2 in) Specifications: 710 mm (28 in) Item Model Number: YS-01 Installation Installing this chair base is straightforward, thanks to the included tools and step-by-step instructions. You can replace your old base in minutes without the need for complex tools or techniques. Usage This