<b><i>✔  </b></i>Meets/Exceeds: DIN 912<br> <b><i>✔  </b></i>Material of Screws: 12.9 alloy steel,black oxide finish, hardness: HRC 39-44, tensile strength: 1220N/mm²<br> <b><i>✔  </b></i>Material of Hex Key Wrench: chrome-vanadium steel, nickel plated<br> <b><i>✔  </b></i>These screws and Hex Key Wrench come in an easy-use separated girds storage box<br><br> <b><i> [ Sizes ]---------[ Thread Length ]------[ Total Length ]</b></i><br> M5 x 8mm--------8mm---------------13mm<br> M5 x10mm--------10mm---------------15mm<br> M5 x12mm--------12mm---------------17mm<br>M5 x16mm--------16mm---------------21mm<br> M5 x20mm--------20mm---------------25mm<br><br> <b><i> Package Contains:</b></i><br> M5 x10mm------10 Pcs<br> M5 x12mm------10 Pcs<br> M5 x14mm------10 Pcs<br> M5 x16mm------10 Pcs<br> M5 x20mm------10 Pcs<br> Hex Key -------1 Pcs<br> <b><i> Total: 51 Pcs</b></i><br><br> <b><i>About Hex Socket Drives:</b><br>  Hex socket hex drives, also known as internal hex drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen wrench<br> <b>About Socket Cap Head:</b><br>  Socket Cap Head ,also known as Allen head ,have a recessed drive, and are commonly used when there is not enough clearance for a conventional wrench or socket. They are fastened with an Allen wrench, which is also called a hex wrench or hex key</i><br>