These screws are intended to replace the screws that secure the truss rod cover on Taylor guitars. This pack includes three replacement screws in gold. How to Choose the Correct Size Truss Rod Cover: Three-Hole Covers - All three-hole covers are the same size. Simply choose the material you’d like. We offer black plastic, rosewood and ebony. Two-Hole Covers - There are two sizes of two-hole covers: standard and short. You can determine the size of yours by serial number or by measuring. By Serial Number We used the shorter two-hole cover until September of 2003. We switched to a slightly longer (standard) truss rod cover so we wouldn’t have to cut the screw by the nut shorter, which was done to prevent it from hitting the truss rod below it. The transition date was September 17, 2003. Guitars with serial number 20030917xxx (2003 = year and 0917 = month and day) or later will take the longer covers. Guitars built before that date will take the short cover. By Measuring - If measuring, the distance between the screw holes is: Standard: 1.8” (1-51/64”, 4.57 cm) Short: 1.65” (1-21/32”, 4.19 cm) For the screws listing: Please note: Truss rod cover screws are sold in a pack of three to cover both two- and three-hole covers. We do not offer them in a pack of two.