Hard steel holder for maximum durability, the heavy-duty construction allows for long service life
Bit holders have strong magnetoconductivity for quick connect or disconnect and ensuring stay in place while driving
Universal 1/4inch quick hex shank and 1/4inch hex socket fit most electric screwdrivers and bits
The small size allows you to bring your bit extension anywhere to get any job done and can fit into many tool bag
There are three extension holders in different lengths and you can use the proper one for various needs