Strong and heavy duty, Lift the dot fasteners lock has three sides and are opened by lifting the fourth side where the DOT is shown on the face of the socket component stamped with the Lift the dot logo. Originally developed to hold canvas curtains in place on horse buggies. Lift the dot is available in a variety of socket prong lengths and stud heights to accommodate a wide range of material thickness. All brass or other non-ferrous metal construction insures that Lift the dot can be used in the most difficult environments.