This is a professional and practical Office Chair Base Replacement designed for your office chair, made of high-grade material for a long time and use. Chair Swivel Base has a simple design, but very practical in use, giving you a . It is sturdy, not easy to break, prevents corrosion, a necessary accessory for your office chair. Features -Color:Black -Material:Iron - Size: 23.00X15.00X5.50cm/9.04X5.89X2.16in - Screw distance：14*17.5 -This is a tilt control base made of premium iron material, which is stronger in texture and safer to use. -The design is scientific, convenient and practical, which can easily meet your replacement needs and bring you convenience. -Office Chair Base is made with excellent craftsmanship, has good bearing capacity and strong practicability, and will serve you well. -The simple and practical iron art tilt control base can play a good adjustment effect and bring you a better experience. -This is a professional and practical office chair adjustment accessory that will easily meet your needs. Package list: 1 x Office Chair Base