Brand New Flexible Drill Bit Extension This flexible shaft can be either used for general cartridge-type hand drill or electric screwdriver. >Durable & portable, flexible out shield protects your hands. >You can save lots of time with this extender & it is a great addition in any professional kit. >Usefull tools: Save your toolbox space, show your expert abilities & save you from awkward places. >Application: some place which a screwdriver cannot reach, you can use this flexible shaft, connecting link with different drill bits.