Features: <br> <br>This product is made of high quality chrome vanadium steel, which is high in hardness, durable and wear resistant. It is very practical. <br>There are 33 styles and models available to meet different needs. <br>Heat treatment, beautiful packaging, smooth appearance. <br>It is equipped with a special storage box and is not easy to throw away. <br>The method of use is simple and convenient, and has wide application. <br> <br>Specifications: <br>Condition: 100% Brand New <br>Material: chrome vanadium steel <br>Type: Solid <br>Quantity: 33 <br>Batch header size: approx. 6.35mm / 0.3in <br>Batch header length: approx. 25mm / 1in <br>Lengthening rod length: approx. 60mm / 2.4in <br> <br>Package list: <br>32 * Batch Headers <br>1 * Hex Shank Extension Rod<br>1、This product is made of high quality chrome vanadium steel, which is high in hardness, durable and wear resistant. It is very practical <br>2、There are 33 styles and models available to meet different needs <br>3、Heat treatment, beautiful packaging, smooth appearance <br>4、It is equipped with a special storage box and is not easy to throw away <br>5、The method of use is simple and convenient, and has wide application