BM-1545AB.. Pair of Antiqued Brass Butler Tray Table Hinges, Heavy duty extruded brass Butler Tray Hinge with rounded ends. This hinge is also often used for some keyboard tray drop downs. Leaf Spring locks hinge at 90 degrees and 180 degree. 2-7/8 inches long x 1-1/2 inches wide. Hinge is 3/32 inch thick near end of hinge and is approximately 5/16 inch thick near the center. Thickness is not as important as the length and width. Replacements can be filled behind hinge or carved a bit deeper to accommodate thickness. Can be used on some drop front desk but not slant fronts. Beware of cheap imitations which are often not Solid Brass! Description should say “Solid Brass” no matter what the finish color.