Our factory is doing the mass production for swivel adjustable furniture leg, which is plastic head with metal thread. When I entered the workshop, several workers are installing it, they told me that it's much easier to install it this time, as the plastic head size match the screw well, they can finish more quantity each day. They are very happy with it. So good news, we can finish it in time now! Timely shipment, good service, I enjoy it.