Usages: demolition phone、 laptop、 MP3、 toys、 charger、 DIY、 precision equipment disassembly、 family use.Features:1. The outer box adopts ABS & TPE materials to inject once to form. The unit has professional and practical design、 exquisite outlook、portability and convenience.2. The multiple dot adjustable extension rod is easy to be disassembled and can be adjusted according to different needs.3. With full scale sizes、 the high quality precision batch of mouth can be applied in all various of fields.4. The ergonomic handle design offers you comfortable and energy-saving manipulation.5. The presion batch of month adopts high quality chrome-vanadium steel(6150#and withstands high temperament treatment、 whose hardness is between HRC52-56.Specifications:42 heads +7 sleeve +1 handle +1 universal Arbors +1 of extension rods +1 tweezers、 a total of 53Sleeve 7: M2.5、 M3.0、 M3.5、 M4.0、 M4.5、 M5.0、 M5.5Plum 10: T3、 T4、 T5、 T6、 T7、 and T8、 T9、 T10、 T15、 T20Cross 5: 1.5、2.0、 PH0、 PH1、 PH2The word seven: 1.3、1.5、2.0、2.5、3.0、3.5、4.0Allen 7: H1.0、 H1.5、 H2.0、 H2.5、 H3.0、 H3.5、 H 4.0Five Star 3: 0.8、1.5、2.0、 1.2 newTriangle 3: 2.0、2.3、2.6Y-3: 1.5、2.0、3.0a: 1.0 U a: U2.3PZ0 a PZ1 a1 * Extension rod1 * Handle1 * Tweezer1 * Universal ArborPackage Size: 15 * 11.5 * 3.5cm / 6 * 4.5 * 1.5inPazkage Weight: 417g / 14.7ozPackage List:1 * Durable NO.8921 53 in 1 Multi-Purpose Precision Screwdriver Set"