Bit tip holder: crafted from chrome vanadium steel for strength and durability; easy to use with a bit extension shaft for versatile reach. Drill Extension Holder: Swivel bit tip holder with 1/4 inch shank that fits in any drill chuck or electric drill; magnetic drill holder provides secure bit seating during use. Drill Extension Bar: The head can be swivelled up to degrees, enabling drilling in corners or tight places; convenient and reliable bit extension bar. Magnetic Bit Extension Rod: Portable and compact; strong magnetic holder keeps the drill securely in place for stable operation and precise bit tips. Use scenarios - Reaching into corner joints or between cabinet members to drill pilot holes with stable alignment. - Working in metal or steel where a magnetic hold keeps the extension bar steady during long drilling tasks. - Drilling in confined spaces such as under sinks or inside engine bays where a swivelling head improves orientation and accessibility.