Whether you ' re reaching into tight spaces or tackling complex assemblies, these bit holders provide necessary reach and stability for any project With a strong grip and a locking mechanism, this bit holder set ensures that your bit stay in places, a seamless and stable during all your constructions and repair tasks bit holder, featuring a robust carbon steel alloy constructions and tips for secure bit holding Suitable for home improvements enthusiasts and professional, this bit holder caters to anyone seeking precisions and efficiency in their work This Drill Bits extension is 300mm ( 12 ' ') long with a 1 / 4 inch Hexagon shank designs, ensuring compatibility with most cordless screwdriver and electric manual screwdriver, Manufacturer: Kaeltsyn