USEIt can solve some stubborn screws on air filters, some high-end patch panels, etc. FEATURESThe professional hand screwdriver is made of chrome steel- vanadium, which strengthens the torsion when using. DESIGNRod style design conforms to the ergonomic principle, easy to use, not easy to fatigue. HARDNESSThe handle is made of PP, double plastic non-slip design, very comfortable to use.Excellent hardness and toughness. Specifications Material: chrome steel -vanadium + 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: approximately 179g Product Features: It can solve some stubborn screws on air filters, some high-end patch panels, etc. The professional hand screwdriver is made of chrome vanadium steel, which strengthens the torsion when using. The shank style design conforms to the ergonomic principle, easy to operate, do not get not easily fatigue. The handle is made of PP, double plastic non-slip design, very comfortable to use. Excellent hardness and toughness. specifications: 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 Package included: 1 set x Screwdriver (4pcs) Note: Only U type screwdriver, no something else included. lucky meet