If you are going to be using No-Sag or "Zig-Zag" Springs, you are going to need to attach them with the right fasteners. Different frames sometimes will call for a different type of attachment. This particular attachment fastens to the top of your furniture frame, but allows the spring edge to sit on the inside of the frame, just below the top edge. Some furniture pieces may require this fastener as opposed to one that keeps the spring edge at the top of the frame.
These clips sell by the pound. 1 lb. contains approximately 55 clips. You will need 2 clips per spring.