Easily draw precise straight lines without using other cumbersome tools High work efficiency and accurate scale ensure accurate marking Easy to use, just limit the ruler to the size and screws you need Metal locators come in a variety of sizes, suitable for different width rulers and hold the ruler firmly and steadily Small size, easy to store and carry. Made of metal, smooth, not easy to rust, wear-resistant, durable, not deformed, Manufacturer: Netbiio