Usage Tips: The professional hand screwdriver is made of chrome vanadium steel, providing greater twist when in use The rod is made of PP, double plastic non-slip design, very comfortable to use, the style of the rod accord with the principle of ergonomics, easy to use, not easily fatigue The style design of the stem tuning with the principle of ergonomics, easy to operate, not easily fatigue, it can solve some stubborn screws on the air filter, high-end patch panel, etc. . The handle is made of PP, double plastic non-slip design, very comfortable to use 4 different sizes to meet your different needs, Size: M1.7 x 50mm, M2.0 x 50mm, M2.3 x 50mm, M2.6 x 50mm Feathers: 1. It can fix some lingering screws on the air filter, some high end patch panels, etc. 2. The professional hand screwdriver is made of chrome vanadium steel, which is more resistant to twisting. 3. The style design of the stem tuning with the principle of ergonomics, easy to use, does not tire easily. 4. The handle is made of PP, double plastic non-slip design, very comfortable to use. 5. Excellent toughness and hardness performance. Specification: Material: Chrome vanadium steel + PP Magnetic: yes Handle length: approx. 80mm / 3.15inch, Size: M1.7 x 50mm, M2.0 x 50mm, M2.3 x 50mm, M2.6 x 50mm Weight: approx. 179g The package includes: 1 set x screwdriver (include 4 pcs) Note: Only U-type screwdriver, no other hardware included.