The base is made of high-quality aluminum alloy, and the surface is polished. The base's reinforcement design. The office chair matches the highest industry standards for office chairs thanks to its stronger issues associated of up to 2500LBS (BIFMA and ANSI) The item is robust and resilient to deformation.We will take every necessary step to keep our customer in the highly satisfied with uncompressed quality.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.Instead of spending elaborately on a brand-new chair if the base of your chair is bent, fractured, or damaged, save money for buying our sturdy aluminum or iron five-legged chair base replacement heavy duty! We are a manufacturer and we will provide you with the most affordable price that can save you the most.We have a team of professional designers who are able to provide product customization services. With our vast experience working with diverse clientele, we are confident in delivering customized solutions that meet any of our client’s objectives effectively and efficiently.