1. Hard steel bracket for maximum durability, sturdy construction allows for long life 2. Bit holders have magnetism to quickly connect or disconnect and ensure they stay in place while driving 3. Universal 1/4" quick hex shank and 1/4" hex socket fits most screwdrivers, drills and power bits 4. The small size allows you to take your bit extension anywhere to perform any job and can fit in many tool bags. 5. There are three extension brackets in different lengths and you can use the right one for various needs. Specifications: Description: These chucks are constructed of high quality carbon steel and chrome vanadium steel with a sturdy construction to ensure maximum durability. It can be used for a variety of screwdrivers, drills and drill bits, making this extension holder very practical and multipurpose. Features: Hard steel bracket for maximum durability, sturdy construction allows for long service life. Bit holders have magnetism to quickly connect or disconnect and ensure they stay in place while driving. Universal 1/4" quick hex shank and 1/4" hex socket fits most screwdrivers, drills and power drill bits. The small size allows you to take your bit extension anywhere to perform any job and can fit in many tool bags. There are three extension brackets in different lengths and you can use the right one for various needs. Specifications: Material: carbon steel and chrome vanadium steel Hex Shank Size:1/4 Hex Socket Size: 1/4 Length: 6cm See more

Bit holders have magnetism to quickly connect or disconnect and ensure they stay in place while driving. There are three extension brackets in different lengths and you can use the right one for various needs. Hard steel bracket for maximum durability, sturdy construction allows for long life. The small size allows you to take your bit extension anywhere to perform any job and can fit in many tool bags. Universal 1/4" quick hex shank and 1/4" hex socket fits most screwdrivers, drills and power bits.