【PREMIUM CR-MO STEEL】Chrome molybdenum is a kind of alloy steel, which has good resistance to hydrogen corrosion and high temperature. In daily use, this material has good impact absorption performance and is not easy to break. 【SAFE & FIRM】 A spring-loaded ball brake can lock your socket in place and fix the through hole to prevent it from falling, providing excellent stability and execution. The through hole on the drive end securely locks the adapter to the drive tang. 【DURABLE & LASER MARKING】 Different from the traditional black oxide coating, BOEN impact socket adapter adopts black manganese phosphate coating to provide excellent corrosion resistance and rust resistance for long-term use. Laser markings make model numbers easy to keep, read and quick identification. 【WIDE APPLICABILITY】 Complete impact drive socket adapter set, with convenient conversion and strong compatibility, can meet all your needs. Designed for drivers, wrenches and ratchets. It can be used with pneumatic tools, electric tools or driving tools. 【NOTE】This adapter is a supplement to ASIN: B09FFCSS5V. If you want a more comprehensive suit, you can search B09FFCSS5V to check the details in our store. A newly upgraded version is now available in-store, featuring enhanced craftsmanship and a fresh design. Search for B0FPFR21T9 to view it in-store.