Flexible Screwdriver Drill Bit Extension 22pcs Drill Bit Extender Holder Set Shaft Tip 1-4 Hex Head Magnetic Hex Soft Shaft  for Connect Drive Shaft Tip Drill Bit Kit Adaptor

Feature: With a rig and driver kit, you can quickly switch drill bits to replace any accessories needed for the task at hand. Flexible shaft at both ends: Hexagonal handle of the drill bit: Approximately 6.35 mm / 1/4 inch. Hex-shaped connection part: approx. 6.35 mm / 1/4 inch. High-quality materials: Hexagon handle screwdriver extension rod set is made of solid steel structure with coating anti-rust function. Spring-loaded tension ball fixes the socket in place. Convenient toolset: The small size in the toolbox does not take up much space. Suitable for DIY, car repair, home maintenance and most routine repairs.