Made with high quality plastic, this gauge undergoes a forging and precisions machining process to longevitys, wear resistance, and precise positioning. Its high temperature quenching makes it slip andguarantees a long service life. Easily measure both imperials and metric fasteners, as well as coarse and finethreads. This gauge covers the diameter, pitchs, and length of most bolts, and screws. Whether you're a hobbyist or a professional in need of accurate measurements, this gauge is a must have tool for anyone working with bolts, screws, or It simplifies the measurement of both imperials and metric fasteners, making your projects easier and more efficient. From automotive repairs to home improvement projects, this gauge is indispensable for measuring bolts, screws, and of various sizes. It covers a wide ranges of dimension, from#4 to 1inch for length and 3mm to 22mm for metric fasteners., Weight: 0.15542589471 pounds, Manufacturer: Aisuoka