Features: Easily measure both imperials and metric fasteners, as well as coarse and finethreads. This durable gauge covers the diameter, pitchs, and length of most nuts, 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 nuts. 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 nuts of various sizes. It covers a wide ranges of dimension, from#4 to 1" for length and 3mm to 22mm for metric fasteners. Crafted with precisions and durability in mind, this gauge combines cost saving manufacturing techniques with high quality materials. Its sturdy construction ensures it will last for years, providing accurate measurements and saving you money in the long run. Specifications: Material:Plastic Size:Approx.1/4" thicknessx8-3/4" lengthx3-3/8 width Package Includes: 1x Measuring Tool note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.