Abstract: A safety double connector comprising a curved main frame forming the shape of a capital letter “S”. A closing element joins the start of the top end of the frame with a point on its body. Another closing element goes from the other end of the frame and also ends at a point on its body. The ends of the frame end in two notches or stops. The closing elements may be folded back easily by applying slight pressure so as to open the spaces between the body of the frame and the threads so as to enable an item to enter. These closing elements return to their initial position by means of a spring so as to close the space.