Features and specifications: Handle: Aluminum rod milling handle Bits: much longer than traditional bits Material: Made from CR-V, HRC 50-54 Number of bits: 22 Color: Grey Phillips:ph000, ph00, ph0, ph1, ph2 Slotted:SL1.5, SL2.0, SL3.0, SL4.0 Torx: T4, T5, T6 Torx: T8, T10, T15; (with tamper hole) Special size: Pentagon 0.8(can change to 1.6); Pentagonal 1.2 SP 2.0 Triangle: 3.0; Triangle 2.5 Hex: H1.5, H2.0Ergonomic Aluminum ScrewdriverWell made screwdriver 100% made of metal, anti-slip area & swivel top provides best feeling in hand,telescopic shaft inside for longer slender reach.Free Spinning TopSilent ball bearing inside for turning smoothly when fixing,no shake,no stuck.Built-in telescopic rodBuild-in telescopic rod ,not additional,will be more convenient and more practise when you need to reach screws in deep position.Push the ring towards the head and and then pull,you can use the extension rod.Precise and long bits -45 mmOur bit length is longer than most other brands who usually use 30 mmOur bits material are really made from high quality CR-V(chrome-vanadium steel),not those cheap quality material,the hardness can reach to HRC60.