Features Chrome Vanadium Steel: Made from heavy duty chrome vanadium steel, ensuring durability and a long service life for the socket adapters. impairment-Resistant Finish: Each adapter is finished with electroplating and blackening, providing impairment resistance and ensuring a longer lifespan. Secure and Stable Design: The adapter body features a spring-loaded ball detent and small hole to keep your sockets secure and in place during use. Versatile Sizing: Includes four socket adapters of different sizes, allowing for various socket uses and increasing the range and capability of many socket sets. Enhanced Socket Set Range: The common size combinations of these adapters multiply the range and capability of many socket sets, making them ideal for a wide variety of applications. Features: 1、Socket adapters are made from heavy duty chrome vanadium steel for durability and long service life. 2、The of each adapter is finished by electroplating and blackening, which ensures impairment resistance. 3、Adapter body is designed with a spring-loaded ball detent and a small hole to keep your sockets still and secure. 4、There are four socket adapters of different sizes and you can use for various sockets. 5、Common size combinations multiply the range and capability of many socket set. Specification: Description: This is a 4 pieces of socket adapter and reducer set. Heavy duty chrome vanadium steel construction is designed for use with drivers and wrenches. A black oxide finish makes each piece anti-impairment and very . Spring-loaded ball detent keeps your sockets still and secure. Features: 1. Socket adapters are made from heavy duty chrome vanadium steel for durability and long service life. 2. The of each adapter is finished by electroplating and blackening, which ensures impairment resistance. 3. Adapter body is designed with a spring-loaded ball detent and a small hole to keep your sockets still and secure. 4. There are four socket adapters of different sizes and you can use for various sockets. 5. Common size combinations multiply the range and capability of many socket set. Specification: Material: chrome vanadium steel finishing: electroplating, blackening Quantity: 4pcs Color: silver, black (Optional) Weight: Approx. 133g Size: 1/2"(square hole)--3/8"(square head) 3/8"(square hole)--1/4"(square head) 3/8"(square hole)--1/2"(square head) 1/4"(square hole)--3/8"(square head) Package Includes: 4 x Socket Reducers Package List