1-5/8" x 2-1/2" Gravity Self Closing HingeYou wont have to worry about your spring wearing out with our 1 5 8 x 2 1 2 Gravity Self Closing Hinge. This spring has no springs, and instead uses the natural force of gravity to close it. It accomplishes this by forcing the bottom of the gate upwards at a slight angle, so gravity pulls it back down once released. Due to this lifting, these hinges work well for gates in areas with a slight grade change. Galvanized steel construction Corrosion