- For the use of connecting the electric screwdriver， screwdriver， wind batch， sleeve， connector adapters， etc.
- Connecting outer hex into inner hex， magnetic， elongation oriented， non-slip.

Specifications:
Material: Galvanized alloy
Shank diameter: 1/4inch(6.35mm)

Size:

original length	max elongated length
About 80mm	About 120mm
About 120mm	About 200mm

Package Included:
1 X Scalable Hex Socket( 80/120mm)

Note:1.Dear Friend， if you don't leave us a message to tell us what size do you like，we will sent you randomly。
thanks for your understanding.