Features: This set of 5-in-1 quick-thread- inserts is a must-have for any DIY enthusiast- or professional mechanic looking for versatile and reliable solution for their threaded fastening needs-. Made from high-quality aluminum alloy, these inserts are durable, lightweight, and resistant to corrosion and wear, ensuring a long service life even in harsh environments. Designed to fit most industrial compressors and air tools, these inserts are suitable for wide range- of applications, from automotive- repair and maintenance to carpentry and construction work. Whether you're working in your garage, workshop, or job site, these inserts provide a fast- and easy way to connect your air hoses and tools, allowing you to get the job done- quickly and efficiently. With their universal design and easy-to-use features, these inserts offer a cost-effective and practical solution for anyone looking to streamline- their pneumatic tool setup- and improve their productivity. Specifications: Material: aluminum-alloy Size: approx 5.28x2.31x2.31cm/2x1x1-inch Package Includes: 5xFemale Universal Air Coupler note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.