Office Chair Metal Base Upgrade Kit - KD Model: Black Breathe new life into your chair with this base upgrade kit, equipped with a brand-new gas lift, new silent roller blade castors and a slick, stealthy angular design that is sure to turn your favorite chair into an eye-catching centerpiece. Features: Durability Made to Last - Steel-reinforced base to ensure a quality seating experience for you Professionalism In the Comfort of Your Own Home - Slick and modern design that even the most modern offices would envy. Elevate Your Seating Experience - Brand-new, high-quality gas lift that lets you find the perfect height. Glide With Ease - High quality roller blade castors offering the smoothest and quietest experience regardless of the floor surface. Specifications: Slick black gas lift Nylon base center with reinforced steel built for durability Eye-catching horizontal blackout legs 75mm Rollerblade Castors Total Height of Base Kit: 330mm-440mm 12-month warrantee (excluding wear and tear on the surface) Requires easy assembly with all tools provided. What's in the box 1x Gas Lift 1x Base Center 5x Blackout metal Legs 5x 60mm rollerblade castors 1x Set of Hardware and tools 1x Instruction Manual"