Drill bit extension holder are made with a steel with heavy duty construction to ensure maximum efficiency. The finish of drill bit holder give an added resistance to rust. It can be used for a variety of drivers making this extension holder very handy and flexible.Feature- Color: As shown- Material: Stainless steel- Size: 3.5 x 1.2 x 1.2cm- Hard steel holder for maximum durability, the heavy-duty construction allows for long service life.- Extend all kinds of screwdriver bits, screwdriver head conversion uses- Universal 1/4inch quick hex and 1/4inch hex socket fit most electric drivers, hand-held drivers and bits.- Compact and portable, easy to carry around- Suitable for drill, screwdriver, batch head and other to transfer