A method of connecting two ends of a chain. One end has a box with an opening which is notched on the top of the box. The other end has a flat piece of metal which has been folded over to form a spring with a knob at the end. The folded metal spring slips into the hole in the box with the knob sticking out through the notch in the top. The compressed spring holds the two ends in place. It is released by pressing the knob. The connection is usually reinforced by a figure 8 catch.