【Excellent and Durable Chromium-Molybdenum Steel Material】: The impact socket adapter is made of high-strength heat-treated Cr-Mo alloy steel, which has excellent durability and can effectively resist wear, corrosion and high-torque impacts. The thickened wall design can withstand higher torque and prevent breakage. This impact drive socket reducer is reinforced with anti-rust black oxidation treatment and chrome plating process to provide reliable professional-grade strength and service life. 【Spring Ball Lock】: This reducer converter adapter is equipped with a spring ball locking device, which can firmly lock the sleeve to prevent slipping or accidental falling off during use. Precision design ensures a tight and seamless connection between the adapter and sleeve, and the locking hole on the drive end secures it to the tool handle, providing you with excellent stability, reliable performance and enhanced safety. 【Durable Design】: The impact adapter features a black manganese phosphate coating on its surface, offering superior corrosion and rust resistance compared to conventional black oxide treatments, ensuring long-term durability. The laser-etched markings on the impact socket adapters are clear and permanent, facilitating rapid identification. The recessed anti-disengagement groove design, combined with a spring-loaded ball positioning mechanism and a safety through-hole for the locking pin, ensures reliable long-term operation under various working conditions without damage. 【Multi-functional Application】: The impact-grade adapte is a multi-functional impact drive socket converter, suitable for drivers, wrenches and ratchet wrenches, which can achieve seamless conversion of tool sizes and is compatible with pneumatic, electric and manual power tools. The socket adapter is suitable for automobile repair, factory maintenance and general machinery fields. It provides convenient and reliable performance in a wide range of application scenarios and can easily meet diverse tool needs. 【Various Choices】: The impact socket adapter provides you with a variety of specifications as a single piece or as a set: 3/4 to 1/2; 1/2 to 3/4; 3/4 to 1; 1 to 3/4; 4-piece conversion head set (1/2 to 3/8+3/8 to 1/2+1/4 to /3/8+3/8 to 1/4). Whether you only need a few accessories or a variety of accessories, this air reducer adapter can fully meet your needs and easily realize socket conversion., Manufacturer: EZVEZS