Easily measure both imperials and metric fasteners, as well as coarse and finethreads. This durable gauge covers the diameter, pitchs, and length of most bolts, and screws. Made with high quality plastic, this gauge undergoes a forging and precisions machining process to ensure longevitys, wear resistance, and precise positioning. Its high temperature quenching makes it slip resistant andguarantees a long service life. 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. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Name:Measuring Tool Material:Plastic Colour:B: White Package Contents: 1x Measuring Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.