Description: 【Application】Ideal for the disassembly of large screws in machinery, auto repair, industrial hardware and other fields. Can be used with power tools or pneumatic tools. 【Features】Surface blackening treatment, not easy to rust or corrode. Standard size, applicable to various scenarios. 【Material】The socket adapter is made of heavy duty chrome molybdenum steel construction and solid. Different sizes meet your different needs, help you in different places. 【Design】: The unique hexagonal plum blossom design ensures efficient and easy to install, making it an essential tool for any toolbox. 【Socket Bit】: 1/2inch Drive Impact Socket Bit Tool is suitable for most wrenches (NOT including wrench). Specification: Material: Steel Size Chart: T20: 7.8cmx0.38cm/3.07inchx0.15inch T25: 7.8cmx0.44cm/3.07inchx0.17inch T27: 7.8cmx0.49cm/3.07inchx0.19inch T30: 7.8cmx0.55cm/3.07inchx0.22inch T35: 7.8cmx0.61cm/3.07inchx0.24inch T40: 7.8cmx0.65cm/3.07inchx0.26inch T45: 7.8cmx0.78cm/3.07inchx0.31inch T47: 7.8cmx0.8cm/3.07inchx0.31inch Package Includes: 1 Socket Adaptor Note: Please allow slightly errors 1-2cm differences due to manual measurement.