Features : 

*Heat treated, durability, has high hardness, not for easy to wear.

*Professional Bit Set Are Made of S for 2 Alloy Steel, Very Well Made And Tough As Nails。Hardness can reach HRC60 degree. 

*Fit for electric drills with regulating device, electric screwdrivers, hand screwdrivers.

*Please do not use drill bits on pneumatic tools, air dills, and the electric drill without regulation. 

*A long lifetime of the drill bit is reached due to its construction and superior technology.

*Nickel Plating for Treatment, Anti-Rust 。High quality, long lasting and . 

*The drill bit set is clearly marked that you can find what size you need quickly. for Easy to take and use.

*The screwdriver set is a little bit magnetic, which helps to keep nuts and bolts stuck to them. 

Specifications:

Batch head diameter: 5.5mm

Shank diameter: 6.35mm

Length: 65mm, 110mm, 150mm 

Colour: black, yellow

Main Product: for cross Screwdriver Bits Set

Material: S for 2 Alloy Steel

Size:6.35mm

Special:Anti-slip

Suitable for： manual and electric driver

Package Included: 

Package1#: 1 × Screwdriver Bit

Package2#: for 2 × Screwdriver Bits

Package3#: 3 × Screwdriver Bit

Package4#: 6 × Screwdriver Bits

Package5#: 9 × Screwdriver Bits

for note:

1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
for 2. Please allow slight manual measurement deviation for the data.