Featuring a robust construction, this drill bit extension kit is built to withstand the wear of heavy-duty use. The shank adapters are crafted to provide a firm grip, reducing slippage during use. This makes the kit ideal for both electricians and DIY enthusiasts who require sturdy tools for their projects. Features -Thread: 1/4 -Color:Black -Material:Alloy -Size:30.00X1.00X1.00cm/11.79X0.39X0.39in -Ease of use: drill bit extension rod kit with shank adapters simplifies your assembly and disassembly tasks, boosting your productivity -Multifunctional: ideal for a wide range of uses including home repairs, car maintenance, and mechanical work, catering to various needs -Sturdy construction: crafted from robust alloy materials, this drill bit extension rod kit is built to last, offering excellent performance over time -Stable connection: the shank design makes sure a secure fit, providing stability and preventing any loosening during use -Portable design: compact and lightweight, this drill bit extension rod is easy to transport, making it convenient for use in different locations Package list: 1 x drill bit extension(6cm) 1 x drill bit extension(10cm) 1 x drill bit extension(15cm) 1 x drill bit extension(30cm)