HIGH QUALITY MATERIALS: The handles of the hex socket wrench are made of high quality aluminum alloy, well processed by precision. The CNC guarantees a long service life. ATTRACTIVE AND DURABLE: HSS drive sockets have a brushed finish surface and rust resistant head which are more durable than regular bits. 4 DIFFERENT SIZES: This tool set contains 4 hex wrenches of different sizes: 4.0mm (M2), 5.5mm (M3), 7.0mm , 8.0mm (M5) which meet your needs. APPLICATION: They can be widely used to repair or assemble remote control cars, model airplanes, etc. WARRANTY: If you have any problem with this product, you can simply take advantage of our 180 day warranty. We will replace it or give your money back for any reason Number of pieces delivered: 1 lucky meet Note: The data is all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be some difference of color, the actual object received shall prevail.