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 office chairs satisfy the highest industry standards (BIFMA and ANSI) The item is strong and long-lasting,not easy to deformation. We will take the opportunity to maintain our clients' high level of uncompressed person's strengths.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 allow for customizable foundation color. Chrome, painted, brushed, polished, and so forth.Instead of spending painstakingly on a brand-new chair if the base of your chair is bent, cracked, or damaged, save money by buying our sturdy aluminum or iron five-legged chair base replacement heavy duty! We are a manufacturer, thus we'll provide you the best deal to save you the most money.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.