The base is made of high-quality aluminum alloy, and the surface is polished. The design to reinforce the base. The load capacity is stronger, and it can withstand up to 2500LBS, which meets the highest industry standards of office chairs (BIFMA and ANSI) The item is strong and resistant to deformation. We will make every effort to maintain our customers' greater level of uncompressed quality satisfaction.The base of the office chair is suitable for most chairs on the market (office chair, game chair, office chair, executive chair). Casters 7/16 inches x 7/8 inches (11 mm x 22 mm) and gas cylinder 2 inches (5 cm)We have our own automatic powder coating workshop and can produce different colors and different surface processes according to your requirements.We support customized color of our base. Polished, Chrome, Painting, Brushed and so on.If your chair base is bent, cracked or broken, save money by purchasing our durable aluminum or iron five-legged chair base replacement heavy duty instead of the painful purchase of a whole new chair! We are a manufacturer and we will provide you with the most affordable price that can save you the most.We have a group of qualified designers on staff who can offer services for customizing products. As a consequence of our deep expertise working with a broad spectrum of clients, we are confident in providing customized solutions that meet any of our client’s objectives effectively and efficiently.