This tailpiece along with a few other types was used on many different model Gibson guitars including the following models- L-50, L48, ES-125, ES-330, etc. Please make sure to check the specs to see if they match your instrument to verify it is the correct replacement. IMPORTANT SPECS AND DIMENSIONS: Overall length of Tailpiece not including hinge = 4 5/8 inches Side to Side width at bar = 3 19/64 inches Width of string bar = 47/64 inches String Spacing at Bar = 1 61/64 inches Important Hinge/Mounting Specs: Mounting Area of Hinge length = 1 1/2 inches Mounting Area of Hinge Width - 2 inches Mounting hole location bottom center = 11/32 inch from bottom edge Two Mounting hole locations from side edges = 5/16 inches. Two mounting hole locations apart from each other = 1 25/64 inches Upper side of hinge length = 1 1/8 inches Upper side of hinge width = 1 25/64 inches