Specifications: Name: Height adjustable support leg Height: Adjusts from 7.2 to 14.8 Support Leg :2inch W x 3inch D, The diameter of Base: 2.5inch Features: 1.Height adjustable:,Adjusts from 7.1 to 14.8, The support leg is suitable for bed frame, bed center slat and other wooden furniture. It can protect your bed and mattress from damage or sagging. 2.Stronger load: The super-heavy carbon steel circular base of the supporting feet is larger and more stable than other brands, and the weight is more than three times that of other brands. Each leg can carry a maximum weight of 600 pounds, which is twice that of other brands. 3.More stable: The support leg is included two Jam Nuts to lock and stabilize extender,it will be more stable than other brands with one more Jam Nut. 4.The galvanized material is better and not easy to rust. Super-heavy carbon steel round base + Rubber round antislip cushion bottom design won't be harm and scratches to your floors and it has better grip. Tips: 1.In order to prevent sagging, bending or cracking, it is to connect to the slats of the current bed frame.You may install as few or as many as you demand, most customers choose to use 2 or 3 support legs. 2.Important Note: Before installation, please be sure to lock the base nut with an open wrench to prevent the screw from loosening and affecting the installation.