LIMITED SUPPLY! L&R Set Of Original NEW CHROME Vanishing Shelf/Cover Spring Arm Hinges Left and Right Side Hinges. Spring arm extends approx. 3.25" . Mounting hinge holes are 1.50" (thinner) and 1.25" OC. If you are restoring your vintage O'Keefe & Merritt, these are the fine details that help with that WOW Factor!