Most of our legs come with an M8 fitting and can be fixed as shown below. Please check the description of the legs you are purchasing to confirm this. Queen Anne legs are attached using a different method that can be found here.

After you have attached your legs, you may find that you require something to protect your floor or stop the castors from rolling. J A Milton offer a wide range of Castor Cups (in plastic or metal finishes), felt glides and glides.