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.Height is 300mm, width is 60mm, suitable for office table furniture leg and other furniture. 4.Thread length is 1.7cm, adjustable height 0-1.5cm, can be adjusted according to your own needs, easy to use. 5.The total load-bearing capacity of 4 pieces is not less than 600kg, which can place other items on the table. .