Description: _x000D_ 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-corrosion and very durable. Spring-loaded ball detent keeps your sockets still and secure. _x000D_ _x000D_ Features: _x000D_ 1. Socket adapters are made from heavy duty chrome vanadium steel for durability and long service life. _x000D_ 2. The surface of each adapter is finished by electroplating and blackening, which ensures corrosion resistance. _x000D_ 3. Adapter body is designed with a spring-loaded ball detent and a small hole to keep your sockets still and secure. _x000D_ 4. There are four socket adapters of different sizes and you can use for various sockets. _x000D_ 5. Common size combinations multiply the range and capability of many socket set. _x000D_ _x000D_ Specifications: _x000D_ Material: chrome vanadium steel _x000D_ Surface finishing: electroplating, blackening _x000D_ Quantity: 4pcs _x000D_ Color: silver, black (Optional) _x000D_ Weight: Approx. 133g _x000D_ Size: _x000D_ 1/2"(square hole)--3/8"(square head) _x000D_ 3/8"(square hole)--1/4"(square head) _x000D_ 3/8"(square hole)--1/2"(square head) _x000D_ 1/4"(square hole)--3/8"(square head) _x000D_ _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 4 x Socket Reducers