Chrome Vanadium Steel 6150 high quality Metal Blade,
Good heat treatment to make sure high hardness(56-58hrc) and good tenacity, and to insure and gurantee high quality and long lifetime using.
Stain finished surface processing.
Strong Magnetic tip to drawing up screw easily.
Ergonomic rubberized hand grips
Anti-Slip/Anti-Shock removable hand
The screwdriver is a device specifically designed for the insertion and tightening of screws. The screwdriver is made up of a head or tip, which engages with a screw, a mechanism to apply torque by rotating the tip, and some way to position and support the screwdriver. A typical hand screwdriver comprises an approximately cylindrical handle of a size and shape to be held by a human hand, and an axial shaft fixed to the handle, the tip of which is shaped to fit a particular type of screw. The handle and shaft allow the screwdriver to be positioned and supported and, when rotated, to apply torque. Screwdrivers are made in a variety of shapes, and the tip can be rotated manually or by an electric motor or other motor.
A screw has a head with a contour such that an appropriate screwdriver tip can be engaged in it in such a way that the application of sufficient torque to the screwdriver will cause the screw to rotate.