?This set is multi-functional for use. It's suitable for electrical/industrial maintenance£¬ lab£¬ factory and other use. <br><br><strong>Features:</strong> <br>Precise tools with different sizes£¬ fitting for different use. <br>Made of chrome-vanadium steel£¬ surface with chromate treatment£¬ durable for use. <br>Includes 21pcs screwdriver bits(Torx£¬ Hex£¬ etc.) and 7pcs sockets. <br>The reversible ratchet handle matches the flexible extension tube£¬ which can work well in particular cases. <br>A storage box can make it easy to carry and prevent screwdriver bits from losing. <br>Ratchet handle can save labor for user£¬ more convenient. <br>Wide range of application£¬ suitable for electrical/industrial maintenance£¬ lab£¬ factory and other use. <br><br><strong>Specifications:</strong> <br>Material: Chrome-vanadium Steel? <br>Screwdriver Bits(25mm):? <br>4mm£¬ 5mm£¬ 6mm£¬ #1£¬ #2£¬ #3£¬ T10£¬ T20£¬ T30£¬ T40£¬ PZ1£¬ PZ2£¬ PZ3£¬ 1.5£¬ 2£¬ 2.5£¬ 3£¬ 4£¬ 5£¬ 5.5£¬ 6mm <br>Sockets: 4.5£¬ 5£¬ 6£¬ 7£¬ 8£¬ 9£¬ 10mm <br>Extension Bar Length: 100mm / 3.94" <br>Sleeve Extension Rod: 25mm / 0.98" <br>Ratchet Handle Length: 155mm / 6.1" <br>Retractable Tube Length: 145mm / 5.7" <br>Storage Box Size: 220 * 70 * 45mm / 8.66 * 2.75 * 1.77in (L * W * H) ?? <br>Product Weight(All Accessories): 555g / 19.6oz <br><br><strong>Package List:</strong> <br>21 * Screwdriver Bits <br>7 * Sockets <br>1 * Extension Bar <br>1 * Sleeve Extension Rod <br>1 * Retractable Tube? <br>1 * Reversible Ratchet Handle <br>1 * Storage Box