-30 pcs of H4*28mm precision repair screwdriver bits, detailed and comprehensive -Using CNC turning and milling high-precision machining, the screwdriver bits and the screw bite more closely, and it is not easy to damage the screw. -8 types & 30 models, wide range of applications: -Compatible with various screw bits commonly used in precision maintenance. -It is not only suitable for electronic products with precise structures such as mobile phones, game controllers, cameras, etc., but also common small objects in daily life such as glasses, children's toys, and small fans can also be easily repaired. -The screwdriver tail cap can be rotated flexibly to fit tightly in the palm of your hand when using, so it can be operated steadily and consistently with one hand. -360? rotating housing: Provides you with the convenience of maintenance and disassembly while also adding a beautiful view to your desktop. -The curved flowing design on the box avoids the entire surface of the box to contact the desktop, which not only reduces friction, but also protects the box body neat and tidy 30 pcs CR-V nickel-plated material screwdriver bits Hex: H1.5 H2.0 H3.0 H4.0 Drilling: T6H T8H T10H T15H Tri-wing: Y0.8 Y2.0 Y2.5 Y3.0 Phillips: 1.0 1.5*2 2.0 2.5 Flat-head (Slotted): 1.5*2 2.0 2.5*2 Torx: T1 T2 T4 Triangle: 2.0 3.0 SIM PIN: 0.8 U-Shaped: U2.6 Stand off (Motherboard philips): 1.5 Package Weight: 229 Package Dimensions: 15cm x 10.5cm x 3cm