The Tolsen 35044 is a feeler gauge set designed for measuring gaps and thicknesses with high precision. It consists of 13 chrome-plated metal blades, each 100 mm long, covering a measurement range from 0.05 mm to 1.00 mm. The polished finish ensures a smooth surface for accurate readings during fine adjustments and precision assembly. To keep the tools organized and protected, the set comes in a chrome-plated case and is delivered in a color box. This tool is useful for mechanical work and auto service, where you might need to check valve clearances or spark plug gaps.