Adopting of good and wear-resistant iron material, which lets you use it for a very long time? This Chair Swivel Base Replacement is heavy duty and designed with rotatable design, practical and . Easy and convenient to install and use, which is a very useful Office Chair Base for your office chair. Features -Color:Black -Material:Iron -Size:30.50X17.00X4.00cm/11.99X6.68X1.57in -This is a tilt control base made of 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