Get precise measurements for engine work, machining, or general mechanics with this feeler gauge set. It includes blades in thicknesses from 0.2mm up to 4.2mm (like 0.3, 0.5, 0.6, 0.8, 1.0, 1.6, 2.0, 2.3, 2.5, 3.5, 3.6, and 4.2 mm). Designed to match specs for engines like D12, D13, D16, MP7, MP8, and MP10, and references part numbers like 85111377 and 88880053. The blades are about 0.45 inches wide, making them easy to handle. Perfect for setting valve clearances, spark plug gaps, or any job where you need to check small spaces accurately. A must-have tool for diesel mechanics, automotive DIYers, or industrial maintenance. Keep your engine tuned and running smoothly with the right clearances.