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