Listed are used valve adjusting shims for Jaguar XJ6 4.2, XJ12, 5.3 engine. from 1987 and older. The sizes are 0.100" x 5, 0.102" x 5, 0.104" x 5. The package contents the total of 15 shims. Please note that measurements may vary +/- 0.001", due to some half sizes. Contact me for a specific size or for any questions. Thank You.