Description:Drill bit extension holder are made with a high quality steel with heavy duty construction to ensure maximum efficiency.The chrome 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.Features:Hard steel holder for maximum durability, the heavy-duty construction allows for long service life. Bit holder has strong magnetismfor quick connect or disconnect and ensuring stay in place whiledriving. Universal 1/4inch quick hex shank and 1/4inch hex socket fit most electric drivers, hand-held drivers 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. Very helpful to remove or tighten a large number of screws after you've started or loosened them.Specifications:Material: Chrome-vanadium steel(black), stainless steel(silver), aluminum(blue)Hex Shank Size: 6.35mm(1/4")Hex Socket Size: 6.35mm(1/4")Length: 60mm(2.36")Quantity: 1Package Includes:1 x Bit Holder