Features: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Applied to a variety of high-rise plugs, plug head plugs, table stools, sofa tables, etc.4.The features is height adjustable, durable, wear-resistant5.Furniture caster adjustable square tube plug with M8 nut.Specifications:Material:PlasticColor:BlackThread Type: M8Size:4x4x4.1cm/1.57x1.57x1.6inch(LxWxH)Weight:357gPackage include:10 x Furniture leg plug end & M8 thread feet